What?
Leomund's Tiny Hut (3rd level Bard, Wizard ritual)
Purify Food And Drink (1st level Druid, Cleric, Paladin ritual)
Locate Animals Or Plants (2nd level Bard, Druid, Ranger ritual)
I don't know how you manage to have trouble surviving, rituals cost you 10 minutes. Or a spell slot you won't...