I tried this suggestion from Sakitech after watching his Youtube video on it.
Honestly its genius and has made serious impacts on extending my battery life.
I am literally ending my day with 70%+ battery everyday!
Basically the trick is turning off location on your phone and creating a bixby routine to turn it back on when you open apps that need location (maps, waze, etc...), then the bixby routine turns location back off when you exit the phone.
Dont worry about not knowing what apps need location. When location is off and you open an app that needs it, the app will let you know. Then if you want to give it location permissions just go add it to the bixby routine.
Its a game changer!
What the video here if you are interested in trying it:
