Ps4 screen got darker?

Moin people like above is my ps4 screen got darker why I e.g. COD doesn't even see the opponents anymore unless they are standing a meter in front of me. I've also looked everywhere in the settings whether I can do something there, I reset them completely but nothing helped, maybe someone had the same problem or knows maybe someone what else i can do? Kiss on the heart for every answer. And thank you in advance.

I connected my ps3 and it works without any problems if it is worth mentioning.

Is it only like this with COD or with every Ps4 game?

I generally have the problem even if I'm only in the ps4 menu.

Maybe it's because of your tv?

Edit: ah it works well if it works with the ps3. Maybe the problem lies in the ps4 settings, not in-game settings

Did you check the TV's brightness?

I already looked there, except for the resolution settings, I found nothing.

The television works without problems, the problem only occurs when the Ps4 is on.