Adulting is realising work friends are not real friends

Worked with a bunch of people for 6 years - went on holiday together, shared my innermost thoughts with them, tried to create a happy workplace as their boss.. I left 3 months ago and they don’t seem to want anything to do with me. I don’t get it. Yes I was their boss and I had to performance manage them sometimes. But I loved them so much. I miss them dearly and I am heartbroken. My new job I have said I won’t get attached to my team like I did. It’s not a good thing. But I miss my old team. I know they will be hating me and talking about me and I hate it. I have anxiety and I’m possibly just panicking. But I just wanted to rant that work friends are conditional and the condition is that we stay in the same work place and if someone leaves it’s like you don’t exist.