How can I reduce battery aging?

The only way to reduce aging is to not “cycle” (charge/discharge) the battery.

As that defeats the concept of a “wireless / mobile” device, your next best strategy is to ensure that “Battery Optimize” is enabled in settings.

FWIW, The 1% / month “degrade” you’re experiencing is not at all unusual.

Jawad ~ A decrease in battery health of 1%/month is normal. See if this helps:

Maximizing Battery Life and Lifespan

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