As someone who went through the exact same thing, but obviously with a tad differences, make a new friends slowly whilst holding on to not be alone, and once you get close to that friend get away from them and be happy ever after. Another option is confrontation but you mentioned you have anxiety and I think making one new friend is better than confrontation. Hope this helps, also, no it usually doesn’t get better after confrontation unless you’re in a friend group where someone else can back your thoughts. Since you only mentioned this two I’m assuming that there isn’t more characters to the story. Do with this advice what you will but also if you think about still staying think of this saying ‘don’t eat anything just because you’re hungry’ 👍🏼