Why do I only have white friends, when I am not

Okay so I am a 22 trans male, whom is half indigenous and half Mexican. I noticed that most of my friends online tend to be white. I am not saying it a bad thing, just a pattern I been noticing a lot, like yea I tend to befriend a lot of people like me. Aka lgbt and neurodivergent people, since they tend to know the experience. Also I tend to hang out in fandoms like Among Us, Animal Crossing, Roblox, Sonic, etc. Yet, I noticed maybe once I has a black friend or dated a half Mexican person (I had to break up with him since of gross things he did). I am not sure if it because I am not has open about be being not white or people assume I am white.

A part of me is guessing that I tend to not be so open about that. Since I still need to learn about a culture that I been shut off out of and not taught. Also I tend to stick to few people as possible and also I don't seek people out for their race or skin colors.

I just wonder if other people whom are also not white had this happen as well.