No, I literally bought 12 games on the current sale, all of them intended to be played on the Deck.

Search metacritic for the top rated 10-15 PC games from each of the last 10 years, and there’s a huge list of stuff worth playing.

Unless it’s incredibly graphically demanding and less than 2 years old, it probably works on the Steam Deck. The only big omission would be certain mp games that require specific anti-cheats that can’t work at all without Windows.

Do you like RPGs? Disco Elysium is £9 rn and it’s a banger

Humble Bundle is always a good shout