Cell phone battery used up very quickly after resetting the phone?

I have a new mobile phone huawei p30 have used the mobile phone for a few months the battery consumption was excellent.

I have not set anything regarding battery life.

After a few months I reset the phone to its factory settings - everything was deleted on the phone.

As a result, the battery consumption is very high and the cell phone can no longer be used as long as it was before.

Can someone help me here

Settings may have been reset. And maybe these are no longer particularly battery-friendly. Take a look through the settings & especially the battery settings. Otherwise, look on YouTube for videos for your Android version and battery settings. You will definitely find something there.

Hmm maybe you have acquaintances who are familiar with it, ask for it, unfortunately I can't help you