MBP 13" M1 battery drain

From what I can see - running Spotify, WhatApps, Messenger Game Controller plus several other Application all at the same time. All these applications consumer energy and thusly Battery Power. Some of those same application are energy hungry. Suggest closing out Applications not in direct usage. That and make sure all third party application are Big Sur and M1 Specifc compatible.

Try suggestions given in this article.

Try Reset the SMC:  If you have a Mac with Apple Silicon, just restart your computer.

Source: https://support.apple.com/guide/mac-help/if-your-battery-wont-charge-mh29198/mac

Section: Tips for  MacBooks

https://www.apple.com/uk/batteries/maximizing-performance/

Are there any AntiVirus, Disk Cleaner, Optimizers, Defrag, VPNs etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation. The Built-in Security of Big Sur is all that is required.

Any of the above will also consume Resources and thusly Battery Power

• The Devil is in the Details >> Up to 17 hours wireless web >> Up to 20 hours Apple TV app movie playback as per Apple Produce website.

I fail to see anything regarding your specific usages mentioned.

Are the installed Applications / Extensions compatible with Big Sur. Check with the Developer for compatible Apps / extension or do they offer updates. Same goes for Third Party Drivers for Printer, Scanners etc.

Ten would suggest opening the Activity Monitor >> View >> View ALL processes. Look in CPU Tab and see what is using a lot of CPU and then do same in Memory Tab. You are looking for a Run Away Process that is using a lot of CPU or / and memory. It will help identify by name the Process or Application.

Please report back the name of the offending application or process.