en_tn_condensed/ecc/04/04.md

became the envy of one's neighbor

The word "envy" may be expressed as an adjective. Alternate translation: "made one's neighbor envious" (See: rc://en/ta/man/jit/figs-abstractnouns)

the envy of one's neighbor

possible meanings are 1) The neighbor envies the object his neighbor made, or 2) the neighbor envies the skills his neighbor has.

like chasing the wind

The author speaks of everything that people do as being useless as if they were trying to control the wind. See how you translated this in Ecclesiastes 1:14. Alternate translation: "as useless as trying to control the wind" (See: rc://en/ta/man/jit/figs-metaphor)