I just don’t know

I can’t figure it out, am I depressed? I recently moved across country to California and it’s not like I don’t have any friends. I’ve become pretty popular, it’s just that I smile but I’m not happy. I would do things that used to be so fun but I feel nothing. I have a 4.0 but I don’t feel anything. And then apart from the everlasting sadness/mehness, sometimes I would just become overwhelmed with a great sadness. I’m 14 but I don’t want to outright say I’m depressed Bc people would say “what do you have to be depressed over?” I have a good family life and all, I never think I’m good enough. I just don’t know what’s wrong with me, please help