Install Accubattery app from Palystore, allow all permissions including data access and disable battery optimization. Then charge your phone from 1% to 100% You will get approximate battery capacity and battery health. For more better results discharge your phone completely till 0%.
You will get better results for discharge rate, charge rate, health, battery life and much more.
(For charge cycle, install Mobile Info app (only for Samsung). In old mobiles this app was able to quote charge cycles correct, but now this app doesn't work on some devices.
