APPLE FIX THIS SHIT NOW YOU ROTTEN BASTARDS!!!!!!

I am having similar issues ever since updating to iOS 14.2. I have an iPhone 8 which I just got a new battery for, but my phone will either have slow response to me pressing the volume and on button, or it will randomly lag and freeze and crash, especially when I plug my phone in to charge after I noticed the random UI lags. The battery life will remain the same on my screen and in my battery settings even thought it is clearly going down. This is very frustrating especially considering I have no widgets and so much storage AND I JUST RESET MY IPHONE AND THE PROBLEM IS STILL THERE AND MY SISTER HAS AN IPHONE 7 AND ISN’T EXPERIENCING THIS SHIT. Fix your shit Apple I stg