Try navigating to \Steam\steamapps\common\Baldurs Gate 3\Launcher\LariLauncher.exe or equal path depending on your install location, press and hold down the Shift-key, and don't release it until the game boots, right click and run as Admin.
Try the same with \Steam\steamapps\common\Baldurs Gate 3\bin\bg3_dx11.exe or bg3.exe.
Navigate to \Documents\Larian Studios\Baldur's Gate 3\PlayerProfiles and try moving your folders to a handy location elsewhere (Don't delete!), but leave the playerprofiles.lsb file be. Then try booting the game.
Shutting down all non-essential programs is worth trying to see if it fixes the issue. Disabling the Steam overlay, or Discord and other overlays have also proved successful at solving crashes.
Disconnect USB controllers!
If nothing is successful then consider
making a ticket to support.
