Thmyl Lbt Cake Mania — 2 Llkmbywtr

Given the nonsense result, it’s likely a was applied to an English phrase. Reverse: shift each letter back 1.

Better guess: It’s actually a simple Atbash-like or keyboard-shift cipher? But looking again: thmyl — if each letter is replaced with the next on QWERTY row? No. thmyl lbt cake mania 2 llkmbywtr

t s, h g, m l, y x, l k → "sglxk" — not a word. Given the nonsense result, it’s likely a was