Forming your own groups is much more viable at the key level you play at (3-9) than it is at higher keys.
If you list keys at 17-18 you are mostly overrun with 1300-1500 people with half of their scores out of time. Fewer people to play with etc.
Besides, this isn’t about basics of M+, this is directly about Hunters and if it is a widespread issue pugging higher keys. Your obvious answer helped not at all.