I’m curious what use case you have where the battery doesn’t last a full day. I generally charge my 40mm S7 once a day but there is always at least a 25-30% charge remaining. I suppose if I did a multi mile bike ride while playing a podcast from the phone that might change. But otherwise it’s ok. I would love a two day charge because since days I miss the morning charge and don’t realize until I’m out of the house but that’s by not common these days.
Edit: I also do sleep tracking each night and walks most days. Battery life was similar on my older S4 up until the last six months where it started running low.