Friendships, relationships and other stuff

I have no idea how to start this but the thing I want to say is:

I am happy with my friends and the amount I have. The thing with the friendships I have is that all of them stem from common interests and not neccesarily how well we match, this doesn't have to be bad and I think we match pretty well and we're all pretty close I guess.

BUT I don't think I've ever made a friend because we really match and my friendships completely disappear when our interests differenciate. Once again not a huge problem, I'm pretty self-sufficient and I think I could be completely fine by myself. (Don't want to find out though) However this becomes a problem with girls. I like playing video games and watching movies. All though there are certainly girls who like both I haven't found any but this can also be attributed to me because I only talk to friends. I have not had a lenghty conversation with a girl in the last 5 years. (I'm 17) Although I don't need a girlfriend I think that a lot of what I want could be solved by a person who I can tell everything to and is kinda forced to care.

I now realize that I left out that conversations with my friends are only for fun and I have never told them something to get mental support. I hope the last part made sense along with the rest. If you read everything it really means a lot and this was a sort of off my chest thing but thoughts and help are extremelt welcome.