Sorry to hear that. Please note that unless you ate it, got sick and received medical attention there really is no case. As such, your best bet is...

File a claim with Walmart or sue them in small claims court. A lawyer would not be able to assist as its too small.

Sorry but unless you ate it, got sick and sought medical care there is no case. Seek a refund.

Not much unless especially since there were no injuries. If the person is convicted, maybe they can be required to pay some restitution but don't...

Hire a criminal defense or traffic lawyer. Do not handle the case yourself.

Nothing unless they find the person is found qnd has insurance.

Typically if one has a surgery, the case value goes down. Talk to the existing lawyer

Hire a traffic defense attorney Don't handle it yourself.

It depends what the contract says. Don't pay until its completed to your satisfaction.

Under FL law, no. You can file a workers compensation and criminal charges. Seek an attorney ASAP