Is it standard to ask company for medical damages that have already been paid?And at what rate? (Product liability)

Yes, an attorney will write a demand letter for a contingency fee. An attorney can handle the entire claim for you for a contingency fee.

You should contact a personal injury attorney on your area to see if they are willing to take your case. These cases are difficult. Good luck to...

Let your insurance company handle it.

Can I sue a motel for negligence? I sustained injuries.

Yes you can sue but this sounds like a complicated case. You should definitely consult with an experienced PI attorney in your area.