iPhone 13 Pro Max Flickering Display

I bought an iPhone 13 Pro Max at Stanford for $ 1200. After 3 days, the display began to flicker. Update 15.0.2 is installed. All apps are updated too. Restarting does not solve the problem. The problem seems to get worse over time. The purchase experience is very negative. I intend to write a bad review on my social media. I bought the most expensive phone in the world and received a low quality product.