Thmyl- Lbwt Msryh Arbynyh Mtlqt Mhrwmt Tfshkh — Ks...

Instead of forcing a phrase, we can try a just to confirm that the cipher is not a shift. Running a quick script (or using an online tool) shows that none of the 25 shifts produce intelligible English, confirming our substitution hypothesis.

If you ever stumble upon a string of seemingly random letters like: thmyl- lbwt msryh arbynyh mtlqt mhrwmt tfshkh ks...

Thank you for your understanding.

But we have no apostrophe in our cipher, so this is unlikely. Instead, let’s try : Instead of forcing a phrase, we can try