This may come off as a stupid question to some but I don’t know what to do.

I have been diagnosed with a few different things (cptsd, severe anxiety, and depression), I have been in search for a good therapist but have come to realize there are therapists in every different field i need help in.

do i need 3 different therapists? can i get one to help with everything? if so, where do i find one?😅