After one ui 7 update battery drain problem Reached it peak....Under 34 munite 86 to 1 present...I can't even use my phone like 1 hour..I can i fix this please help

I have got a system update of 256 MB but when i download it..it stops at 70 % and not updating and...i am facing lot of bug just because of this update.. even though i can't update it...it stopped automatically...A34 user...What should i do

Today i got a notification for an update like 250+ mb ...but when i start it for download and Reached 54% it failedI tried again but again failedWhat would the solution ?

When will the one ui 7 come into Samsung Galaxy a34

The power button has broken ...what should i do ....i don't know actually it broken but One side of this has come off outward...But it still attach with my phone... should i change it ? Or can i fix it by myself or a mechanic without changing the but...