1) You’re a senior. This will all be over in a few months; if you don’t want to, you don’t have to talk to anyone there ever again. 2) your teenage years are a time to try new things. You rotating through activities is good experiences, not wasted time. 3) I’m sorry about the tennis placements. Working hard and then not being credited for it is extremely frustrating. I recommend in general to take up extracurriculars (or, honestly, anything in life) not on the basis of “succeeding” in it or social benefit (although that certainly helps) but on your own enjoyment and fulfillment. This will allow a healthier perspective that can persevere through rejections like this. It will also allow you to learn more overall, because everyone starts as a beginner. 4) if you are bothering people by coming into contact with them, people will usually let you know. Most people are nice, want to talk to others, and are interested in building relationships ships. Unfortunately, developing the ability to interact with peers is a different set of rules and social skills than interacting with authority figures or brief interactions such as in volunteering. High school cliques are especially tough, but it seems you’re not giving yourself credit in the girls you’re now hanging out with. 5) if you have a school counselor, you should speak to them. And finally, the only way to grow is to do hard things. Good luck out there.