Am i a shitty kid?

Forgive the shitty punctuation and capitalization please, typing on a phone here.

I dont know why I would be (maybe i just cant see it), but im often getting told that im the usual insults by my mother. I dont see what I do wrong?

I never ask for anything. like, literally. shell offer to buy me anything at a store but I always say I dont want anything.
I always say thank you when she gives me something for no reason/does something for me
I never ask for money and if i do, its once over a seven-month span.
I offer to wash the dishes for her even though she says she wants to do them herself.
I clean my room all the time even when it doesnt need to be.
And I almost never act out unless she gets angry at me first in which case i APOLOGIZE and admit that i was WRONG anyways.

I dont know... what do i do wrong? she'll call me mean, inconsiderate, ungrateful, etc... What more can I do? I am definitely grateful for all she has done for me but even when i say THANK YOU repeatedly, she doesn't care. It's as if she doesn't believe me? Do I not sound genuine enough?

What is wrong with me, what am i doing wrong? She'll also tell me that she loved me until I was 10. What does that mean - that she'd loved me until I developed a conscious?

I know you don't know her side of the story but I legitimately have no clue what I'm doing wrong. I understand that as long as I live under their roof, I'm hnder their rules - I never, ever challenge that!! What am I doing wrong? What is maki me such a bad kid?