The bulk of my finds come from chat either on Lemmy communities (!jrpg, !patientgamers, or this one) or a couple Discord servers I’m on. Sometimes a game will catch my eye unexpectedly while I’m on OpenCritic looking up something else, too.
Otherwise it’s generally gaming news. I get that from also Lemmy/Discord, my RSS feed, or showcases. I always end up wishlisting half a dozen games during the summer showcases. My RSS feed right now is DualShockers, Eurogamer, Gematsu, PCGamer, Rock Paper Shotgun, Siliconera, and Denfaminicogamer (Japanese site). Always open to more suggestions for the feed; the problem is not everyone does RSS these days.