Hey samwisegamgee98!
I have a laptop with the Radeon 540 and had similar problems of driver crashes while playing games like Overwatch and Valorant. I formatted both my c drive and d drive after 2 years of using my laptop which made it possible for me to play again. But still having little crashes once in while, possibly for the laptop being open for long amount of hours. I have tried literally everything past the format from uninstalling and reinstalling drivers. installing only drivers without software.
Or if you can't format the C: and disk drive. Try downloading previous drivers of the GPU especially the ones that came with the laptop, as some of the new updates may be harmful to the system which differs from one laptop company to another.
Good luck, and respond to me if any results happen.