Given the time, the most likely intended solution is:
decodes to: "years number word 2019 by major my keyboard" or something similar, but with mjana = "major" (if Atbash or ROT13 mjana → znwna? no).
t(20) + 11 = 31 mod 26 = 5 → e n(14) + 11 = 25 → y z(26) + 11 = 37 mod 26 = 11 → k y(25) + 11 = 36 mod 26 = 10 → j l(12) + 11 = 23 → w → eykjw — not helpful. Given the look of the text, it’s possibly a or a Vigenère cipher with a keyword. But without the key, it’s tough. tnzyl brnamj wwrd 2019 rby mjana llkmbywtr
Given the pattern, I think is most plausible for puzzle ciphers. Let me fully Atbash it:
l l k m b y w t r → my keyboard (m y k e y b o a r d?) Wait, "my keyboard" letters: m, y, k, e, y, b, o, a, r, d. Here we have l l k m b y w t r — not matching. Given the time, the most likely intended solution
Let’s do first word: tnzyl → gmabo Second word brnamj → yimznq — not obviously English yet.
t↔g, n↔m, z↔a, y↔b, l↔o → gmabo b↔y, r↔i, n↔m, a↔z, m↔n, j↔q → yimznq w↔d, w↔d, r↔i, d↔w → ddiw 2019 stays r↔i, b↔y, y↔b → iyb m↔n, j↔q, a↔z, n↔m, a↔z → nqzmz l↔o, l↔o, k↔p, m↔n, b↔y, y↔b, w↔d, t↔g, r↔i → oopnybdgi Given the look of the text, it’s possibly
Atbash each letter: