We all are waiting desperately for NEW UI 6.0 and checking for the updates several times a day.
But I can foresee the panic and confusion after the update.
During January and February 2024 many of as asking for the solutions related the issues associated with One UI 6 just like people in UK and USA.
If you visit T-mobile, Verizon, Vodafone, etc websites they are full of complaints related to battery drain, overheating, display and connectivity.
As per discussion with some software guys these issues might settle in upcoming updates or the next major update of UI 6.1 during May & June 2024.
So I would suggest to enjoy your current UI and hope for the good.
Current issues 
