It sounds like you're having trouble asserting your boundaries. Sad thing is, there's no award for being the most nice and accommodating girl. Sometimes you have to tell people, "No." And there's nothing 'b****y' about it.

You're a person, and you deserve respect and consideration, just like everyone else. If you don't want to talk to someone, don't talk to them. Unfollow and unfriend people who aren't really your friends. You have every right to do that. You deserve to be able to spend your time with people you care about, who care about and respect you in return.

I'd recommend looking up Captain Awkward. She has a lot to say about trying to be 'the nice girl', since she struggled with her boundaries in the same way. It helped me feel a lot better about starting to assert my own boundaries. I hope it helps you, too.