I’m sad

I’m 13 years old. When I try to seek for help people always say that I’m too young to feel that way or that it’s just a phase but I know it’s not. I haven’t been feeling good mentally for a really long time. Now It’s just became worse. The older I get the harder it gets. I recently found out that I am a part of the LGBTQ+ community and it’s even harder now. I came out to my parents and they aren’t really happy and accepting. Because of everything I finally reach out for help to my friends. At first I thought I gonna get better but they didn’t say anything and one friend said he hasn’t been feeling good as well and all the attention went to him. I’m scared for him as well but I really needed to talk to someone. I just don’t know what to do.