Is it normal that i act like this around people

So just today I've had it again, the problem is that I find people exhausting and at the same time was originally an extrovert. I kinda exaggerate when meeting new people and wanna make a good impression and not drown in the crowd of other people. I usually don’t like small talk and at the same time need to include everybody in the group or keep the mood or talk in order to make it just right, so I’m basically putting myself up to the front. When they tell me about what they like it’s very often a boring way to talk, I like to go straight into what they think about certain topics and why, because that shows more about who they are than definitions. Anyways when we start that I usually pay great attention and get their personality quite fast and what they say I’ve already thought about and know the topics already, so I tell them my opinion, they usually agree and at some point they just start talking and talking and don’t stop and tell me stuff and even secrets about them I didn’t ask for at that point. Why do they always do those things, like I know that thought and that topic, I know that stuff you don’t need to tell me again...And I don’t need to know your whole life we’ve just met. It’s just exhausting, I have so many problems on my own, but don’t want to hurt them with saying I don’t wanna know.
The bad part is, that all of this drains my my energy and I have none left afterwards. I also concentrate so much about doing it all right, that one part of my brain panics and pulls my usual wisdom and opinions back, so I can’t show off more of what I normally think about. It just feels like one part of me is insane and genius and the other part anxious and that collides. This probably doesn’t sound like I’m that smart haha, but I’ve got a very abstract brain so it just jumps around in there and I’m a very fast learner. I know there are many people a lot smarter than me, but this way of interacting tires me and other smart people I get intimidated by. It just doesn’t feel like I can act normal around anybody