Half black screen on Acer Nitro AN515-57

Hi, I want to ask about a problem with my Acer Nitro An515-57 laptop, so about more than 5 months ago my laptop screen was half black, and the quarter and half black had a slight glitch, but I used another monitor so it wasn't a very big problem. Anyway, I've tried various ways to fix it and followed tutorials from YouTube & other sources which told me to execute cmd, win + shift + B, but it still didn't work to get rid of it, I'm curious whether this problem comes from my laptop settings or indeed from the physical screen The LCD is straight on, and I also assume this happens because every time I play a game that makes my laptop temperature hot, I turn off the laptop and close my laptop when the laptop keyboard is still hot or warm, but I'm not too sure about the cause... Is there anything? can anyone provide a solution? or should I replace the LCD screen