People are not as clever as they think they are and are afraid of change, they like to trash talk new stuff despite the solution to their problem being on the first page of a search. Other people then repeat this so they can look informed. Don’t be those people.

Maybe fancy zones in windows power toys could help? https://learn.microsoft.com/en-us/windows/powertoys/fancyzones

I have a Samsung TV that does the same and I have had a few on the past with other faults. Double check that it’s not just the screen going very dark (led failure) but it’s probably the power board in the TV. They can be repaired (local Tv repair co would charge £70 to have a look when I asked) but I bought a board off eBay for £40