Are u guys facing huge battery drain issue after one ui 5.1 update in s20 fe 5g,also getting less sot than before max 4 hrs

Who all thinks that one ui 5.1 os worst update samsung has ever provided to us as there are many bugs in it and the most important one is battery drain issue which is almost in every samsung phone the others are. Camera issue. Heating issue. Screen f...

Why my battery drop from 85 to 84 as soon as i disconnect the charger from my phone is this my battery issue or ui???