I was 16 when I dropped out of public school to finish up online. That is when my prolonged bouts of social isolation started. I had friends, but these friends were people I abused drugs with (to cope with our life circumstances), as they weren’t socially adapted like most people our age.
As time went on I ended up cutting off all contact with them and haven’t contacted them since age 18. I haven’t had a social outing in 5 years. It’s liberating but embarrassing at the same time to be saying that.