Huawei P9 lite currently empty quickly, why?

My Huawei P9lite is no longer the latest model, but the battery has been draining unusually quickly for about 3 months now - without my cell phone habits having changed. Can I try something else besides changing the battery? I'm grateful for every tip. Lg

Have you ever checked what is consuming so much? I'm sure there's an overview in the settings

Yes, repeatedly deleted cookies, apps always closed, also cleaned the memory, etc. In between I restart the cell phone, then it usually takes a few days until the "battery drain" starts again. But I also have to admit that I'm definitely not a cell phone or electronics freak.

And what uses the battery?

Unfortunately, this is also the case with my Huawei p10 lite. : /

I have to charge it twice a day. If e.g. In the evening there are still 60% on it, in the morning it is only 20-25%. Although of course at night the cell phone was just lying around. Unfortunately, I don't know what the battery consumes.

You do not understand. There's a list in the settings that clearly shows you what uses the most battery.

For me it looks like this:

For me it is under settings / device maintenance / battery. But I have a Samsung

Said that I'm rather talented ;-) I'll take a look