Sounds like you are stuck, unless you do find a kind multiplayer soul to rescue you. It may be easier to just take the hit and try again. My first deaths in game were often from crypts until I learned how to handle them.

My checklist for going into crypts now includes: a minimum level 10 armor rating (upgraded deer, or some troll armor), a shield for the archers, and a stagbreaker (deer trophy, core wood from tall pines, leather scraps, upgraded workbench) to smash things on the other side of closed doors, stone and wood to make a campfire in the first room, resin for torches if your settings make it too dark to see, and of course your preferred weapon, blunt works best, but flint axe is adequate if that's what you've been using anyway.

Once you have all that, then you are ready to rob the dead. Don't worry about being disrespectful. You're dead too.