MacBook Air 2020 - Flickering Screen

My MacBook Air has had a multitude of screen problems that seem to keep dragging me back to the store, and now that I've just gotten it back, I'm having another one. The screen will occasionally (once every other day or so) flicker with what seemed to be little distorted boxes, either a green/light blue and black speckled tint. Today, it has happened 3-4 times. I tried changing things such as true tone like I've seen in many other forum posts, but that doesn't seem to be the problem. I'm trying to figure out what this could be before I lose my laptop again for weeks at a time. I'm a college student doing mostly virtual classes, and the Apple Store never gives me conclusive answers to my questions and has taken up to four weeks to get me my laptop back (despite promising it to me within a week) previously. Please help me determine what this may be.