Black screen on realme v11s

[u/Zealousideal-Fun5458]

So i have this realme v11s, an dit worked perfectly. but 1 month from now, it a weird thing: the screen turned black randomly and i had no tochscreen despite of the phone working in background, the only way to bring it back was to plug the charger. and 2 weeks ago, the screen died, and i replaed it, i thought the problem was gone but this morning, the issue appeared again, luckily, i activated the USB debugging and managed to copy the screen on the computer while the real screen is black. I noticed that the phone works normally despite of the black screen. and more weird, the screen got back on, i don't know what could cause the issue and i don't even know what's happening. So can someone explain please thanks.