How can I get people to talk to me?

You make a good point with the age gap thing, at least until you are in your 20's yourself and it doesn't matter so much. I don't know what to tell you about how to get on better with your peers. It was pretty hard for me as well when I was in high school and I didn't get stuff like that down until recently in college.

Maybe take an active interest in some hobbies? I had always felt like this before I got into music, mtg, d&d, and a bunch of other things. It's a lot easier to get people to talk to you if you do things that they're interested in- plus, if no one talks to you at first, you still gain the experience of doing all kinds of fun things. This is what's worked in my experience, so yeah: Find something you love doing and just go do it.I should probably amend that it should be something that can be socialized. If you play video games, go to a game shop. If you read, join a book club. Etc. Etc.

I'm going to learn Ukulele, but I really don't think that will help me forget about how no one likes me. I would love to play d&d, but no one will let me because I'm a girl. I tried to get into mtg, but no one ever wants to play against me because my decks sucks since I can't afford good cards.

Have you tried going to a card shop and just chilling there? It took me a while to get good at MTG and I still don't buy the expensive cards. As far as d&d goes, that's kind of awful. Like half the people I know who play it happen to be female and they tend to be the best players in my opinion. I don't know if your area has card shops, but the ones where I live have d&d games anyone can join. You could also try joining an online group to play. Don't use the ukulele to try and forget, just have fun with it. Like, literally my best advice for everything is to have fun. It draws people in.

The only card shop in my area is the next town over from mine. And not only do I not have the money for the bus, but the only people who ever hang out there are in their late 20's. I'm 17. Older people never want to hang out with me. The only people that like me are at least 4 years younger than me, and that makes me really uncomfortable. I just wish more people around my age would be interested in the things I have to say, or tell me about themselves. But no one does. All I do is say "hey", and I never get a reply. And of course, I don't want to bother them, so I just stop trying.

Be true to yourself first and foremost. Forget trying to impress other people to get their attention. People love authenticity. Grow comfortable with yourself, love yourself, and allow yourself the room to grow and make mistakes. After you achieve these, and you allow yourself to be seen for who you are, people will COME TO YOU!

You cant force friendships,but you can invite others to join in with activities ,something that you like,and may be then you will start to get more people knowing you better,seeing more in you then they did before.Some times you just have to be the person that starts some thing,so dont be to worried that its you all or most of the time.Just be yourself ,things will happen soon enough.

By not being depressed, there's a wisdom a person reaches at a certain stage in their lives, when you find the "will" and strength to control your emotions, and therefore be able to cheer up and emit a vibe around you, care for people even if they care not, always be nice. and even when people upset you quickly forgive them on the spot and smile :)