OCE M+ community/discord?

Hey guys! A returning player here wondering if there is a decent size community or discord focussed on m+. I am most comfortable as dps but really interested in jumping into healing and would love a semi relaxed environment to do so.

I understand Im pretty late to the party with people focussed on +20ish and am hoping theres a community out there for those starting out.

Also seems jumping to alliance on frostmourne is the go, anyone have thoughts on this?

Thankyou and happy gaming