Smart lock is not on as I do not see any places to be deemed as "trusted" lol and I've done all system updates. It's just really annoying at this point. I've been began turning my screen as dim as possible, and putting it face down when not in use.
Had the same issue for a while. My screen was waking up in response to any movement near the phone. Turned out that in Accessibility > Interaction and Dexterity a feature called Easy Screen Turn On was enabled. While this may not help with the OP, it could be the solution for others.
@Candaaaacee have you found a solution to this? My Note 9 does the same thing, and has since I got it new last year. I have done everything suggested here and what you have posted about and not had any luck. It's annoying while driving at night and it lights up in my mount every few. minutes. I feel like all the wake ups has got to be effecting battery life.
I cant garauntee this will work but its wortha try. Download and install the goodlock app from samsung app store. Then install nice catch app in goodlock app. Location in goodlock........scroll down to bottom............family.........nicecatch! That app should tell you what is turning the screen on, vibrating fone, activating the camera, etc. Its worth a try.