Me too.
OP, I also convince myself that everyone hates me. I do know a few people that genuinely don’t like me though as they’ve told other people and it’s got back to me.
I’ve never been told why, except a couple of ‘oh they’re just jealous because you’re pretty’ type excuses, which I think is just BS. Very few people don’t like someone because of their looks IMO, especially if they’re a generally kind and nice person.
I try and take and always take an interest in others lives, to be there for them if they need me, I love a good laugh and night out etc. Reading a comment above though, I guess I do moan a bit, but then when I think about getting together for a catch up with friends, everyone moans, we have a good laugh too, but generally there’s always something going on in each persons life that they’re not as happy with and so they have a moan, me included. Maybe I’ll try and ONLY be positive about everything in the future, but IMO that’s not how you should be with true friends, acquaintances yes but friends, no.
And yes, alcohol or ‘beer fear’ is definitely a thing OP. I really, really doubt everyone hates you, you wouldn’t have been invited if that was the case. Your colleague is a rude cow, you don’t sit with your back to someone completely ignoring them, height of rudeness. As for demanding a present….!