My way of dealing with it is two phones. Besides my smartphone, I still use my more than ten-year-old Nokia when I do not want to take the big smartphone with me. Of course, it only has phone, SMS and a clock. But I usually do not need anything else when I go for a walk or meet up with friends. I just want to be reachable in case there is a problem.
Its old battry still lasts quite a long time, and I have it switched off most of the time anyway. So I can go 7+ days without recharging.
What could change that would be the availability of a smartphone that turns into a PC/laptop when connected to a docking station. I suspect that Microsoft is pursuing such a plan with the integration of Android into Windows 11. Let's see ...