Tnzyl Lbt Kar Barkynj Mhkrt Flws Ma La Nhayyh 〈TESTED – 2024〉

But without a clear cipher key, I can't decode it.

Let me check the phrase you gave:

t (20) → g (7) n (14) → a (1) z (26) → m (13) y (25) → l (12) l (12) → y (25) tnzyl lbt kar barkynj mhkrt flws ma la nhayyh