You understand the phrase let alone retires wealthy in The person who acquires money always one keeps that Its structure is difficult to understand.?

The phrase "the person who acquires money always one keeps that" is grammatically incorrect. It should be "the person who acquires money does not always keep it." The phrase "let alone retires wealthy" is also grammatically incorrect. It should be "let alone retire wealthy."

The structure of the sentence is also difficult to understand. The sentence should be rewritten as follows: "The person who acquires money does not always keep it, let alone retire wealthy."