The die can be fickle sometimes friend. My party has had sessions that our DM designed as some easy combat for us, but turned into characters nearly dying because we couldn't roll... well to save our lives that night. On the flip side, sometimes in boss fights that were designed to push our limits with an intense chance for a TPK, we rolled multiple criticals and wacked it around like a rag doll.
Sometimes you just gotta pray to Tymora and hope for the best.
