I plug my phone only when it gets below 50%. Then it gets a 100% charge.>=50%. I try to unplug it at 80% so the battery lasts longer.
Read somewhere that it is the best way to extend battery life. Not sure if that is a true fact,, but I follow suggestion.
Want this phone to live as long as possible.

Older phones had the option to replace battery. Newer phones,,, only replace battery if you send back to phone manufacturer.
The manufacturers/providers want you to really just buy a new phone.
I see this as wasteful throwaway action as soo much is today

