As on the earlier thread comments
Likely to be a rogue app using up resource.
Go to Settings, Battery and see what is eating your juice.
Go to Settings, Device Care and see what is using most ram. Consider putting the memory hoggers to deep sleep then....
Then put your device in to Safe Mode and see if it is still happening.
If it is now OK- there's your problem.
If it isn't - back up then book a repair.
It is likely one of your apps may need updating for one ui7.
S24 Ultra