the statement if at first you don't succeed try try again best fits whose ideas on how to fix depression

That statement best fits Franklin Delano Roosevelt ideas on how to fix Depression. In fact, Franklin D. Roosevelt is credited to have said "It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.

Roosevelt plan for the New Deal faced several problems: it could not lower unemployment and the jobs that it created were public or precarious works. During his second term, he implemented a second New Deal plan in order to alleviate the situation with the implementation of social security, but still, there was no redistribution of wealth. Rossevelt thought that public work, instead of budget deficit promoted the creation of jobs.

Despite some failures, the plan was succesful in puting the public powers where the private business failed and support them until they could rise again.