So sorry for your struggles. PC has been a great place for me over the years. Doesn't replace therapy, although last summer my last therapy ended in a rupture without repair. I had gotten some good stuff, though, and was able to handle that on my own. PC and my support groups have become my main supports.
Sorry things are so tough right now. Sounds like you need more help and support than you're currently getting. Maybe when you get a new case manager that will improve. It certainly "should" and I hope that you can make a strong case for that with him/her.
Wishing you the best . . .