Most frequent: d(4), y(4). In English, most frequent letters: e, t, a, o, i, n.
Guess d = e (common). Then y might be t . afdl brnamj drdsht fydyw shwayy
Reverse string order: "shwayy fydyw drdsht brnamj afdl" — no. Assume it's English. Frequency: Letters in text: a(2), b(1), d(4), f(2), h(2), j(1), m(1), n(1), r(2), s(1), t(1), w(2), y(4). Most frequent: d(4), y(4)
Word1 afdl shift –1 → zeck (no) Try +1: bgem — no. Most frequent: d(4)
Try a quick : we already did — gave zuwo yimznq... not English.