i miss my ex, miss when i used to write randomly to my ex and say i love you and now i can’t have that emotion cause i have no partner

So I had this one friend and he emotionally manipulated me and our other friends to the point we were afraid of what he would do to himself if we left, I’m still recovering even though it’s almost been a year, I just miss that summer when we were all happy and naive but now everyone fucking hates eachother and I just need advice

why are people so messed up. is it that hard to just be nice??? bullying IS a problem and it's not a 'just ignore it' it's a thing with consequences. lets not normalise it please. or most of us won't be alive much longer.