I’d like to toss my guild into the bucket:
https://us.forums.blizzard.com/en/wow/t/ah-recidivus-non-toxic-gamers-lfm-for-m/
M+ is all we do, and we’re in desperate need of some healers! Your friend is also welcome; we’ve got plenty of people who are always happy to lend a hand and offer advice. ^^