[go] to the wall

to suffer ruin, failure, or defeat, due to financial difficulties, and without the possibility of recovery or rescue

The origin of the idiom "go to the wall" is not entirely clear, but it has been in use since the 17th century. This idiom is used to describe someone or something that is facing imminent failure, ruin, or destruction, often due to challenging circumstances or overwhelming opposition.

After a series of bad investments, the company went to the wall, leaving its employees jobless and creditors unpaid.
Despite efforts to save the failing business, it eventually went to the wall, unable to overcome its mounting debts.
The once successful restaurant faced fierce competition and eventually went to the wall, unable to attract enough customers to sustain itself.
The small startup struggled to secure funding and went to the wall before it had a chance to realize its potential.

to do everything that one is capable of in order to do or achieve something

He went to the wall to defend his beliefs.
These guys will go to the wall for you.