I think I understand a bit of how you are feeling.
I just posted in response to someone that was posting about their new life.
Basically, just try to be positive and embrace this fresh start. There may be some friends and family from the past that want to join you in the adventure, if not, their loss. There are lots of great people out there. Find some new friends. But isolating isn't good. Hopefully we all learn something as we go through this very difficult experience. Hang in there. Try to make each day or week just a bit better.
Letting go of the past was very freeing for me. I don't know if I will ever be able to go back to my previous lifestyle and all of the friends that went with it. But I'll be ok with that. The next chapter might be even better.
Su