Caught my mom watching explicit yuri. what do i do? (+ other related stuff)

!! Before anything !! : Just finished typing and checking the post's description and realized my problem's explanation just goes downhill. I thought it would be necessary to put a little warning before anything, so... yeah.

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A couple hours ago I found out my cat had a wound so I went to warn my mother about it since our kitten got another one not too long ago without explanation. When I told her, she left her tablet besides us but unfortunately she forgot about closing the tab or the video she was watching two minutes earlier, 10 meters away from where I was using my PC in our living room. Something in her tablet's screen caught my attention since she doesn't usually watch bright stuff due some sight problems, or other things besides IRL shows, so when I saw it was an anime show, I was about to ask about it since I'm also an anime fan, but I ended up biting my tongue when I realized she was watching explicit yuri. She also realized this detail and stopped examining our cat to close the tab she had forgotten to hide.

The worst part of this is that she has never supported LGTB+, attempted to make me forget about my bisexuality several times and apparently never took seriously my "show tastes", always joking about this and saying that everything regarding manga, anime or any foreign thing I like is just some childhood thing I never got over of, even if I'm already 18 years old and I've already shown a persistent interest for digital illustration and concept art for videogames.

This is really concerning to me because we literally fight almost everyday for stupid things and she attempts to ridiculize my hobbies and indie art studies. Besides this... Well, I've been finding strange hints about something lowkey going on around our home since I was like 10 years old. This includes me finding old cameras I thought I could use again for my photography sessions outside home to take references for drawing, but inside the camera I've found pictures of my mother completely naked, toying herself and other stuff you can imagine. This is not the only old camera that I've found with these kind of pictures (she also didn't only have these kind of pictures in which she was the main person... you know what I mean right?) and videos, and I'm afraid I know why these disappeared quickly days after my unfortunate discoveries. My father, who was always against my mother, also had thrown innuendos at me about some kind of "whoreish" behavior of hers, something I also was silent about since nothing was my business, even when I aged and my father just kept on showing how disgusted he was with her (when she wasn't around! yeah...) and eventually admitted my mother had a box full of sex toys hidden in their bedroom, which is something I actually never found, and honestly never wanted to.

To make things even stranger... My father, who I haven't seen in years due legal stuff, also followed the same pattern when my parents weren't divorced yet, when I was like... 9? 10?? You see, sometimes... I caught him masturbating at some... bear things... he was watching in some webpages he also closed as fast as possible when he noticed I was staring at him confused from the door since he forgot to lock himself properly in my parents' bedroom and I wanted to tell him something. As you can see he wasn't really blessed with cleverness. By then I didn't know what was going on with the bear subculture thing, but now I recall everything and realize what everything meant. And... Honestly, I'm not really surprised anymore of my parents' behavior. It just... disgusts me, instead of hurting me somehow.

Personally I've never been in real good terms with both of my parents, and I've always suspected there has been something going on behind the scenes with them two and their... double personas since a very young age. I've always been attempting to ignore silently what I was witnessing at home and outside, and I thought the double persona thing of theirs was also over since I turned 18, my father disappeared with his debts and his... creepy lover, and my mother just kept saying anime was shit and that people cannot learn anything from it, that it's full of boobs and dicks, and that everything is some kind of nonsense that just brainwashes people. Everything was just fine, as if it probably should be! There's a lot of parents out there who cannot see anime, manga and asian culture another way, so for me this was fine. I didn't care about her critiques, and since these have always been quite frequent, I hope you can understand why I'm so shocked after seeing my +50 years old mother watching anime lesbian porn in her tablet as if nothing was happening, like 10 meters from me, when theorically I'm the one with the weird hobbies in our family who hasn't got over her 'childhood traumas' yet.

Now the question is, should I talk about her about what I saw, or just keep rolling with it, as I've been during my entire life? Honestly I have nothing against this, since I'm the one who has been supporting LGTB+ from the start since I've always been a bisexual, but this... Feels a bit like another evidence of her hypocrisy. An evidence of a part of her hipocrisy. And honestly, I'm a bit tired of silence and being like a presence or a wall at home. Especially since she always gets upset and shouts at me if I contradict her somehow or I answer her. She's, for some reason, overprotective as well. I've even been years without the keys of my own home or permission to bring anyone, less close male friends I once had before they had to move away. I didn't get my keys till some weeks after I turned 18 and she'd get upset at me everytime she called me or sent a message everytime I didn't answer mostly due battery issues, then allowed me to get a debit card but doesn't let me buy anything... I don't even have posters or figures in my home, just random plushies I got to buy at some cons with less than 20 dollars everytime? In short, she's been one of the main reasons for me to develop isolation, also the main reason for which I spent months at home without hanging out with anyone, influenced my depression, and other social issues. Most of the last friends I keep through the internet and W.A. cannot even take her seriously at this point. They describe her as a madwoman, too, so uh...

What do you think about all of this?

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NOTE: At first I wanted to put this in the "Sex" category but as I kept typing I realized it's a matter of our broken home, so I will post this under the "Family" category. Hopefully this isn't breaking any rules or something since I'm not tryig to refer to "pedophilia" or "incest" but problems between my parents, concretely my mother and I. I just made my account to ask this here since I'm not really sure what to do anymore. I would appreciate any answers and everyone avoiding reporting this at least till I have an answer...?

Thank you.