I don't know who needs to hear this right now, but I feel like there might be someone ... if you've got someone in your life like a friend, or someone who isn't making you feel good and you've been contemplating your relationship with them for a while, then this is your sign to just pull the plug and cut them off. Trust me ... it might seem like it's going to be really difficult at first, but chances are you've already mentally detached yourself from them if you're having these thoughts, and it won't actually be that hard when you let go of them. It's so easy to overthink this sort of thing and to think like 'oh but I'm going to alone', or 'oh but we've been friends for so long' etc ... but trust me, it's never as bad as it seems. Sure, it might be a bit strange the first few days or a couple of months if you're used to having them there - but that doesn't have to be a bad thing. If anything, you'll feel a sense of relief, and you'll feel free without that person causing you extra stress.
You don't have to keep holding onto people who are hurting you or causing you harm just because you're afraid of feeling lonely. Your own company is always better than being with someone who doesn't treat you with the respect and the kindness that you deserve. Your alone time doesn't have to be 'lonely' ... it can be a way for you to recharge, and a way for you to learn more about yourself and what you value in your connections and relationships so you won't have to go through something similar in the future. I can guarantee you that for every negative thing/person you cut out of your life, there will always be double the amount of positivity that follows up at a later date ... you just have to be patient and believe that there's good out there. Because as hard as it is to understand these days, there is definitely good out there, and it will come to you when you're ready for it.
Don't stay unhappy and surrounded by people who don't treat you good just because you're afraid to be lonely or because you're afraid of what's to come in the future. The future will always be better for you than the past, and the sooner you let go of the things that hurt you, the sooner you'll get to experience the joys of what's to still come.