Do you happen to have a Razer Chroma? Known Technical Support Issues - Updated Oct 13, 2021 - #16 by Drakuloth
If not, are you using any overlays like nVidia ShadowPlay, Xbox DVR, or Discord? Sometimes these can interfere with launching the game.
You may also be able to solve this with the steps here: Blizzard Support - Overwatch 2 Crashing at Startup
If you’re still having problems, please report back after trying to solutions above.