help pls TW:cocsa

hi, i cant believe im writing this out but here goes TW:mentions of cocsa recently ive been dealing with a memory that has resurfaced when i committed cocsa on my little brother who is 3 years younger than me. I was abt 11 years old, maybe 12 and was exposed to adult sexual content at a very young age and experienced cocsa a few times throughout my childhood. i even vaguely remember being coerced as a 2-3 year old into doing oral on another kid (although i don't remember if i did it, i just remember bits and pieces). i ended up doing oral on my brother once bc i was curious and i regret it so much. i remember feeling shame a little bit after, almost like i realized it was wrong and feeling awful but really blocking it out for a while. i adore my brother so much and it makes me so sad that i did that to someone i should have protected. he is also on the spectrum which makes me feel so much worse because he truly must have been so confused and it makes it difficult for me to gauge if its affecting him and how to navigate it. we have a good relationship today but i was also mean to him as a kid due to the stress of having to be somewhat of a caregiver to him. ive only told my mom in hopes that she can look out for him and get him the help he needs but i feel so so terrible and its been eating me alive. after the event, i honestly became really uncomfortable with sex in general, stopped watching porn and now even as a young adult i feel stunted, ive never even had my first kiss. how can i move forward and do i even deserve to?