So my phone keeps on glitching, but if I turn the brightness high it doesn't glitch that much but it's still there. everything works perfectly though, I can still make calls, videos, social media and others. It takes time to open it but it still works. Oh, and when I used youtube the screen was fine but aside from that it keeps on glitching.
Here's a link for reference, I took a video of it so I can show it when I get it fixed when I really know the problem. Can't just go out and ask people since well, I can't.
The phone will need to be evaluated by a certified technician. You can find your nearest authorized service center here: https://www.ubreakifix.com/samsung