I let people abuse me
That feels very wrong. Why would you let someone abuse you?
I would rather be abused than be left alone, at least someone is paying attention to me.
I understand that you feel neglected, but allowing yourself to be abused by others is not healthy. You should talk to someone about your feelings of loneliness because they can help you move past those feelings.
I don't want to be left alone, I want people to pay attention to me.
Wanting attention from others is okay, but it there's a limit to that. Being abused shouldn't be part of that and I do hope you can find someone else who would be attentive to you but would not abuse you in the process. Those people exists, and you shouldn't endure being abused.