Oppo A9 2020 Touchscreen Flickers and Kind Of Get Shaky

Since January 2023, the problem still hasn't been fixed. I'm not going to think about this brand again. When I touch my Oppo A9 2020 phone's screen, especially in the lower right corner, it shakes. This is especially annoying when you're typing on the keyboard because it types in different letters than you press. I can't even get rid of the characters I typed wrong. The problem goes away for a short time when I restart the phone, but it comes back after a while. This problem coming back makes the device much less useful. The problem hasn't been fixed since January 2023...it's been a year since I reported this.