How Do I Charge and Manage My Battery Cycle Efficiently So It Can Last Longer?

I bought a MacBook Air 2020 M1 chip back in November 2022. I keep my use at a minimal level. I do not have any significant applications running except for iMessages and Google Chrome.
I noticed recently that my battery capacity has dropped down from 100% to 99% even though the cycle count is only 20.
Do you think this is normal or would you recommend me taking the MacBook to Apple for check up on battery?
Thank you!
I am trying to preserve my battery and charge it efficiently so that it can last longer.
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Fadi Rainier