i have a oneplus 9 (LE2113, if that matters) and the battery is starting to give. i’ll try to have it replaced when it goes fully unusable but i’d like to already have a replacement in mind so i don’t risk going without a phone for too long. any recommendations?

my current phone has never been slow, so i don’t really care for a more powerful hardware.
i would like one from a brand with as little software bullshit as possible though (i’ve seen the horrors of redmi software and want to stay as far away from That as possible).

and in case anyone is wondering, i’m not brave enough to try rooting my main phone lol.

any help would be greatly appreciated

edit: i don’t know if i worded myself poorly but by ‘rooting’ i also mean installing a third party os. i would like a phone that is not awful out of the box if such a thing exists.