Is it possible to fix gray horizontal lines on my samsung galaxy s20?

Gray lines keep appearing on my phone screen. They show up for half a second then disappear again for some time. It's more frequent when I turn my phone horizontaly and it's very noticeable when I'm watching videos. The lines are some times very thin when my phone screen is horizontal but when it's in a normal position they are somewhat wide and gray with black small black spots in them. Got this phone only a few months ago and I haven't dropped it. The only damage on the screen are a couple of scratches so it might be the problem because I haven't experienced this before the scratches happened but I wanted to see if it might be a software problem instead and still fixable