Picture from the LG 24GL600F-B looks compressed?

I have a little problem with my LG monitor.

As you can see in the picture, the monitor creates hard gradations of colors. There's no such thing on the display of my laptop or on my mobile phone. Incidentally, it appears everywhere.

Can someone help me or did someone have the same problem?

The monitor is also connected via HDMI.

see pictures:

Try changing the brightness and / or contrast.

My friend's television had this phenomenon a few weeks before it gave up the ghost.

Nope, neither does anything

Looks like the color depth is too low… 16bit instead of 32bit, for example.

Check your setting of the GPU