1 Battery drain.
2 Screen turning off or flickering.
3 Netflix not working from playstore.
4 SMS Messages not displayed in notifications esp OTPs.
5 camera quality is reduced , night mode not well optimised, Live Focus is now hanging.
6 Gesture navigation is not smooth enough.
7 Samsung galaxy app got slow.
Overall phone got worse with the update, but can be fixed with proper update and considering feedback from users.
Most of the replies for feedback are auto generated or copy pasted answers from manual which are not solving any thing.