Acer Nitro VG270bmiix screen issue. Vertical stripes and rude screen. Also darker area.

Hello! Im asking for help. So here i have an "Acer Nitro VG270bmiix" monitor since July. Sometimes when i turn it off or on, and its trying to find the vga source, it shows me (only) vertical stripes and rude screen. Its even worse now, since there is a part of my screen that turned darker than before. Going to attach the picture, but its even worse for my eyes irl. Tried different cabels, nothing have changed. I have another monitor, thats going well with any cabels. May I think well that this is one of the monitor's issue? Tried the unplug and 30 sec push thing as well, didnt change anything. The red X is a mark for the much darker side of the screen.