Just to echo the other comments about bundles, look at Humble Bundle right now, choice is $15 and has Persona 5 Royal and 8 other games, and P5R's historical low is $20. I think some of the other games on the bundle are cool too, but I'm probably not going to play most of them right away, of at all. Likewise for Fanatical build your own bundles, sometimes one or two games makes the bundle worth it.
And there's also free games from EGS and occasionally GOG and other stores. I haven't spent a penny at EGS, yet I have hundreds of games and have finished maybe 3.
I only buy a game when I want to play it soon (next month or so), but sometimes it's cheaper to get a bundle than just that game. I don't spend a ton on games, but I have a ton.