There was a great thread about this that I can’t quite find, but this one is close and worth reading.
I think the short of it is nobody else is ever really going to fully understand, but there will be some who can still support you even if they don’t fully understand it. It’s also the kind of journey that you should allow yourself to lean on other people.
Just try to remember that they don’t have a full frame of reference for it and that’s okay. They can still be there.