Wow - that is crazy. I do not analyze which hours of the day or which house the moon is in before I put my phone on a charger. I don't religiously keep it between 40.0734586% and 80.24586857%. I just charge it when I need to. Sometimes in the car on a less than perfect charger. Sometimes all the way to the tippy top 100.01%. Sometimes it actually depletes all the way

. The sheer horror of that. And my iphone 13pro received on launch day 2 years ago has 90% max capacity today. So that sounds like an issue - a 1 year newer phone. I hope this is better for you..and for us all..although I am stuck in the uncool blue club with you..so maybe that impacts things a bit!!