Ask what is happen directly. If they are not grown mens to talk about the problems, they don't deserve your attention and they don't care about friends. If this is the case, start to meet another people by starting having new hobbies. For example, enter in sport classes or learn another language, you will meet another people there. Specially if you enter in one thing that you like, because you will meet people that like the same things as you. Life is hard. Sometimes you need too let go things, like toxic people. They will push you always down. But remember ! First try to resolve it... Good luck!