Throwing good money after bad

“Throwing good money after bad” is an idiomatic phrase that refers to the action of continuing to spend money on something already in a losing situation or a bad investment, in an effort to recoup what has already been spent. It suggests wastage of resources since additional spending will not improve the original error or the situation.
Here’s the analysis:
The Core Idea:
The idiom refers to the pointlessness of investing more money in a losing proposition or object. It implies that rather than cutting losses and leaving, an individual is doubling down on a bad choice.
Examples:
Fixing an old broken-down car: If a car keeps breaking down and needs frequent repairs, continuing to spend money on repairs is throwing good money after bad.
Gambling: Going on to gamble once one has lost a lot of money with the intention of recouping the amount lost is frequently an instance of throwing good money after bad.
Investing in a failing business: Throwing more money at a business that clearly is not going to work is another instance.

Effects:
Going on to continue to throw good money after bad may result in further loss of money, time wasted, and emotional upset.
In essence, the idiom cautions against additional investments in a losing proposition and urges a wise decision to cut one’s losses and move on.