Depends on the game.
If it's a game that I am hyped for or a multiplayer game, then I'll buy it on release. Heck sometimes there are deals that allow me to get $20-$30 off of the pre-order prior to release.
If it's a game that I am meh about, I'll wait for it to go on sale.
PC Specs: CPU: 7800X3D || GPU: Strix 4090 || RAM: 32GB DDR5 6000 || Main SSD: WD 2TB SN850