Given 2019 is in the middle, maybe it’s a date or event.
Let’s do first word: tnzyl → gmabo Second word brnamj → yimznq — not obviously English yet. tnzyl brnamj wwrd 2019 rby mjana llkmbywtr
Given the cipher style and “llkmbywtr” likely meaning “my keyboard” rearranged, I’d say the piece is but that’s speculative. Given 2019 is in the middle, maybe it’s a date or event
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. t(20) + 11 = 31 mod 26 =
Given the pattern, I think is most plausible for puzzle ciphers. Let me fully Atbash it:
ROT13 (a↔n, b↔o, …): tnzyl → gamly brnamj → oenazw wwrd → jjeq 2019 stays 2019 rby → eol mjana → zwnan llkmbywtr → yyxzoljge