MacBook Air screen repeatedly malfunctioning

Hello! My MacBook is displaying rainbow pixels, and it is intermittently responding to moving the cursor. When I opened it, it displayed the Lock Screen, then turned all black, with the Apple symbol still lit up. After a few minutes, it switched to nonsensical pixels across the entire screen. After restarting the screen was fine, but this has been happening quite often now, along with the right third turning white, while still working normally. Would anyone know how to fix these screen errors? I have attached a picture of the pixels screen below: