Check “zfnels” — ROT13 back? That would be “msaryf” — not English. “zuxe” ROT13 → “mhkr”.

t (20) → q (17) t → q b (2) → y (25) y (25) → v (22) q (17) → n (14) → — no.

Try QWERTY up one row (e.g., w→2, e→3, but letters to letters? Not consistent).