Oppo Reno 4 Lite Screen Turns Yellow After Updates and I Can’t Use It Properly

I’ve had the Oppo Reno 4 Lite for almost two years now, but for the last eight months, the screen has been randomly turning yellow by itself, and there hasn’t been any physical damage or impact at all. The display is totally impossible to read. It can clear up in just a few hours, but sometimes it takes a couple of days. It's pretty unpredictable. I've seriously struggled to use my phone properly for the last eight months. Ever since I installed the latest updates, I've been running into these problems. I thought a company like Oppo would do better than this, and I think they need to tackle this problem head-on. Dealing with this ongoing issue is really annoying, and I just want Oppo to step up and fix it already so I can use my phone without any more hassles.