Danlwd Mwwy Jwan Bray Kampywtr -

d→q, a→n, n→a, l→y, w→j, d→q → qnayjq — no.

So maybe not ROT13. Given the phrase shape, maybe it's (a→f): danlwd mwwy jwan bray kampywtr

Second word mwwy → xhhj? No. Actually, let’s check (shift -1): d→c, a→z, n→m, l→k, w→v, d→c → czmkvc — no. Step 7 — Try letter frequency + known phrase structure Looks like two short words then two words then one long word. d→q, a→n, n→a, l→y, w→j, d→q → qnayjq — no