How to check the reason for battery drain

Thanks To Samsung Developers To Give A new Feature to galaxy M31 ..But Thereafter also something missing樂Like........1. Data speed monitor2. Data and wifi usage together3. Briefing in Home screen4. Default app lock5. Screen Recorder6. Music Share4...

HiFollowing issues are observed after UI 3.0 update1. MI fit app not working properly2. Microsoft Teams not getting updated