Tetr.io is great — it does have ads (unless you have Adblock) but not impactful during gameplay at all and is usually the go-to for multiplayer games. Another normal Tetris game that’s more single-player oriented is jstris.

Tetr.io looks great but all the visual flair makes my laptop's fans go crazy and adds small but noticeable amounts of latency to the game.

Sure, my 2020 Intel Macbook Air is a bit pokey compared to the newest models, but shouldn't a 3 year old computer be more than enough to play 40 year old game?

Have you tried changing the graphics settings? I usually turn them down and have great performance.

Use an emulator and pick any retro variant.