I take care of my batteries.. used my iPhone3 5yrs, iPhone5 for 6.5yrs, and iPad2 for 7.5yrs all as primary devices and on original batts.... and still using them (as mp3 and streaming music players). Recently upgraded to an XR as primary.
I either plug into a light timer or USB timer (cost me an extra 10sec to adjust time) at night so it’ll charge just before using it the next morning.... or just manually charge the next morning while I’m eating Bfast/morning routine. I like to cycle around 50%, depending estimated usage for next day. Eg, usually 75-25-75 and 80-20-80, sometimes 90-10-90.