Been testing a few options lately and wanted to cross-reference with what this community thinks. Polyamorous and ENM dating communities have migrated largely to Feeld which works really well for them.
Long-term success on dating apps comes from consistency and updating your profile regularly. Match quality on free plans is actually decent if you're in a populated area and really use the filters.
OkCupid's free tier is still surprisingly usable compared to what other apps offer for nothing.