I find an another queer in my HS and I don't really know if I'll try to talk to them

I'm a 15yo enby and i feel very uncomfortable with new people. I have noticed that a people have a LGBT+ flag in their phone case I do want to talk with them but I'm a little bit scared (I had a lot of emotional dependences) Sometimes I just think that I won't talk to them because they'll think I'm weird I had told my problem and he said that is good I want and probably will talk with people just because I want without never talk to them and saying "I'm too shy and can't do that" I have thinkt that I can just wear something with LGBT+'s colors but I have some classmates/friends who are homophobic (I'll be totally been alone without them in class)