Invalid Android system spends a lot of battery

[MaryamRubenCoca30]

I have a problem, and is that the Android system spends a lot of battery, sometimes even 30% someone has a solution to this? I have a mi max 3 with the last weekly version without root, although this problem came to me after updating to 9.2.14. thanks in advance and forgive my English so bad

 

[Igor Eisberg]

Too general, we don't have the device and even if we did - it would be like searching for a ghost.