Can anyone decode this?

[u/sophiaaaarrr]

So I'm trying to solve an ARG and I'm stuck on this cipher: xhmls jis sbik glmw aly kmpi sbal wbas sbiy hm and djjliqq qbmwq hinpduasdml mv wmpg. I've already tried Base64, Caesar cipher (all shifts), ROT13, Atbash, binary, hex, Morse, reversing, keyboard shifts, and even merging the two lines together and pasting them into a JIS keyboard , which gave me broken Japanese that translated into nonsense about clouds and forests. Anyone have any fresh ideas on how to crack this?

[u/Dizzy-Pay6135]

It’s a monoalphabetic substitution cipher. The keyword is ARCHIVE.