re: Can Louisiana ever be fixed?

It can be repaired.

Dissolve all government in the state, including parish and cities.

Replace it with a private company to run it as a receivership.

Appoint a judge to oversee and monitor the improvement. When the economic situation reaches a level such as Alabama or North Carolina then allow elections of only approved candidates, no crooks, pirates, criminals, or otherwise corrupted scalawags can run. Ensure only those with adequate intelligence and fidelity are able to run.

Overseer judge still monitors for the next 12 years and if it starts to go off the rails dissolve the government again.

Also make all education in the state have entry exams. If the child cannot read /basic math by the end of the 1st grade then they are out. School should be a center for education, not a daycare.