Issues after software update

I have a 5th generation iPad. After the most recent software update - iPadOS14.4.2 - I have had trouble playing youtube videos within my safari browser. A few have worked, but the majority of the time I get an error message. The error notification said to restart my device and browser - both of which I did - and to check my internet speed, which was more than enough for what it said that I needed. Is there any way to resolve this issue (other than simply using the youtube app which gives me far more ads than the browser does)? if not, is it possible to revert back to the previous operating system?