The majority of people usually only want you around when they want something from you, so when the thing someone wants from you is just yourself, it’s a little shocking and takes quite a bit of getting used to.
But you can’t let bad people ruin you for good people, all you can do is learn from those experiences and take that knowledge into a positive thing. That’s what life is about, really. Just learning and growing - it’s necessary to constantly be growing, always aiming to be better for yourself. There’s a lot you can gain from nearly every experience, positive or negative. surprisingly, you can take positivity from any situation.
Sometimes it’s hard to keep your head up when you’ve been pushed under the surface sometimes, but you’ve gotten through those, so why should this be any different?