This might sound like an odd approach, but buying a small and cheap band (Xiaomi or Amazfit, even last or yesteryear's model) and try it for a while can be great.

You'll get decent tracking and alert management if that's what you're into. I won't be top notch but 95% there, and it will last for a week or two on a single charge instead of dying everyday .

Then after a week or two you'll know if you really cared about these numbers, how it helps you or not, and how you feel about the form factor.

Mine if off in a drawer most of the time and I get it out once every few weeks when hiking, but there is no sunk cost for something this cheap, and now I know I wouldn't have kept wearing something more advanced either.