Backup & change EDID of Monitor

Hi, 2 months ago, I failed hard and bought a shit monitor... The monitor is a Dell S2719DGF. It can have a locked RefreshRate at 60Hz and 144Hz (HDMI). The FreesyncRange starts at 40Hz, but i never used it. All works fine and i finally got it after lots of try at a exact refreshrate at 144.00hz instead of 144.07 or so

So my question is, is there a way to edit the Monitors EDID and set a manually RefreshRate at 120Hz, even if it is officially not supported?

I want my PS5 connected to it at 120hz cuz 60Hz sucks hard...

If there is (technically) a change to get it working, should i test on my PC before it works at a fixed RR of 120Hz (never tryed it before)?

Thanks for your help