Real Life Problems

so i have this memory when i was 6...one of my cousins went with me to the toilet and showed me his pp. i don't remember much else about it. all i know is that i want to get rid of it because i can vividly imagine it and he was only three years older than me so its like seeing someone underage when i remember it.
i don't think it should be worrying, right? it can't really mean anything since he was only 9. maybe i remembered it in the wrong context? would this count as traumatic? should i tell someone about this?
another memory i have is someone i know taking me to his room saying i could play on his games console but he just hugged and groped me instead. should i tell someone about these? is this bad?
i'm scared these might have traumatised me since sometimes i feel like i'm not clean when i shower. i also have a lot of sexual urges. i also have some nightmares too that are related to pedophilia, cousins and incest. should i tell someone? please help me what do i do?

It just doesn't feel real and I have no one to tell it to. I don't have the best relationship with my mom and she just called me pretty mad because of something I forgot to do and she said she was going to come home and leave with my stuff out of the door and that was one of the scariest experiences I had. I then spent hours cleaning the house and doing all the chores in hopes of making her change her mind. In the end, I went to meet her and she didn't come home and nothing happened. It's just... I don't know. My mom when she gets mad at me and when she's not is just too different. I need braincells made out of steel to keep myself sane.

Long version:

Before getting started, I just want to say that I’m genuinely interested in answers. I don’t want to be offensive or disrespectful. I know I’m dealing with sensitive issues I’m sorry in advance if I offend anyone. Please, correct me if I said things wrong. I know very well this is Mangago but I enjoy serious questions. If you’re only here to discuss about mangas, sorry to bother you.

I used to think that it’s always a good thing if more people fight for a cause like equality of rights for example. Even more if these people come from another group and are not directly concerned because they may have a different perspective. They could also make things change in their own community. To me, it can convey the idea that it’s not only about a group against another. But it is obvious that the people concerned will always have more legitimacy.

However recently, I read something about POC being capable of fighting their own battles and white people tending to behave like knights in shinning armors. It seems like a relevant issue so I started to doubt hence my questions :)

1/ Do you agree with that statement? What are the « problematic » behaviors? I am not judging anyone, even with good intentions, people can makes mistakes.

2/ To what extend can it be also applied to other groups?
Can you be a feminist activist if you're a man?
Can you speak about the issues of the LGBTQA+ community if you’re not part of it?
Etc.

3/ Then, what can you do when you're not part of the group?
How can you show support irl and on social medias?


Thank you for taking time to read. English is not my native language please ask me if I’m not clear enough.