One possibility is that it’s a (shift cipher) or a letter substitution .
Let’s test first word “nwtt”: n(14) → m(13) w(23) → d(4) t(20) → g(7) t(20) → g(7) → “mdgg” (no) nwtt aghnyt amy namt bkyr
Instead, it might be a or an intentional phrase — perhaps “nwtt” = “what” or “that” but shifted. One possibility is that it’s a (shift cipher)