Lyf is seldom used as a baby name for boys. It is not in the top 1000 names. Among the group of boy names directly related to Lyf, Leif was the most popular in 2016.
Baby names that sound like Lyf include Labe, Laef, Lafay, Laif, Laiv, Laive, Lap (Vietnamese), Laphee, Lapp, Lav, Lave, Layf, Leaf (English), Leb, Leef, Leib (English and Yiddish), Leif (English and Scandinavian), Leife, Leiff, and Leiv (Scandinavian).
† approx English pronunciation for Lyf: L as in "lay (L.EY)" ; IH as in "it (IH.T)" ; F as in "fee (F.IY)"