I Am getting only 3 hours of screen on time in my Galaxy S21FE Without having any power saving mode on..

I got 3.5 hr of Screen on Time with first full charge after One UI 7 update on my s21fe..Its worst!Whats your opinion...Will it improve to 6-7 hours Screen one time??

Finally got one ui 7 update yesterday 

Scamsung delayed one ui 7 update with android 15 and other android smartphones companies are working of Android 16...I tired of Samsung delayed update Mindset...My Next may be not from Samsung due to delayed update..I will look forward to buy Iphone ...