you may want to flash zero audio mod which is available here on xda to use the earpiece as stereo speaker + dolby digital audio for android 11 to make the speaker sound so much louder and to adjust the sound to your liking. It also works for bluetooth speaker and TWS as wellversion of twrp?
I can't find this download...
Could you please share a link to each tested ROM?
Turn off automatic brightness, turn the brightness to maximum, choose dark themes and wallpapers, it is still very nice and beautiful.