After the android 11 update I cannot get any information on battery usage on a per app basis. This makes it more difficult to detect, which app might be using more power. It says something like “no data regarding battery usage”, for what it’s worth.
Overall, the battery life seems ok, though.
I had some problems, when I used a google backup from previous android 10 (battery drain about 1.5 - 2.0 times as fast). When I reverted back to factory settings and then installed some apps freshly, everything seems fine.