Touch Screen Lags Horribly Even after Screen Replacement Oppo A31

Well i had an 2020 oppo a31 for like 2 years and it was a great phone and it worked really good but suddenly i have dropped the phone and the lcd was damged and the touch was horrible

I assumed that the touch was bad because of the lcd so i did a screen replacement but it didn't fix the issue

I even did another screen replacement but nothing changed the lcd is obvious;ly fine because it has been changed but the touch isn't

It's now one year since this problem has appeared and i couldn't fix it

I have tried every solution on youtube and googled for any solution but it didn't do anything

I tried software reset but still nothing happend

I hope someone helps me

Thanks :)