That sounds terrible. I suppose you know for certain the couples are definitely not married and cohabiting and definitely taking communion? At the Novus Ordo mass I attended before I discovered the Latin Mass there was a couple who ran the children’s liturgy and did readings during Mass and they had three children together and never married. The priest baptised all their children and never tried to persuade them to marry. I did tell the guy to marry her and was friends with them both, but he just laughed it off said it was too expensive 😱😱 I think that priest should have talked to the couple and said they had to have a wedding with witnesses, not expensive, no guests before baptising their baby. Anyway they’re separated now. So yes I get why you don’t go to that mass. Is there any more conservative church nearby?
A few of the adulterous marriages and cohabiting couples, yes. As for the SS couples, it’s rather obvious! By “conservative” if you mean novus ordo, no, I will not attend what is at best, a “bastard Mass.” (Words of Archbp. LeFebvre) There may be a more “conservative” parish around, but I cannot risk attending an invalid mass or receiving invalid sacraments from invalid priests! If that’s the case, I may as well attend a “conservative” Protestant church. Morally speaking, a number of them hold to and practice higher standards than so-called Catholics.