Long Resting - eviltoast

I’ve never played D&D and I’m getting into BG3. I must be marathoning my characters cause I’m usually out of spells when I run into fights. My useful exploration spells also cost spell slots so I’m usually proceeding with cantrips for my adventures until I decide I really need to recharge.

How often is everyone else going through a long rest? I know there’s a trade off of consuming camp supplies and so maybe I’m just the guy who saves all the items for end game and never ends up using them.