I can happen. I haven't played SR since the feast was released so i don't know how are the teams now.
I can just tell you when SR was released, eso farmers and ppl looking for easy kills for their title were not playing as healers. And sometimes we had 1 or 2 healers for 24 players. SMN didn't wanted to switch to SCH and if you asked "can we get more healers please ?" someone answered you "play one yourself" (even if you were already a healer xD).
But don't worry, other GC can encounter that problem too. This kind of issue is everywhere.
I just think you had bad luck