WWhat can I do if my PI lawyer settled my case without getting all my medical information ?

Case is not settled until you sign off or give your expressed consent.

What is the protocol for answering a civil lawsuit filed against you for personal injury?

Presumably, you either did not have insurance or your insurance company disclaimed coverage. At this point, you either need to represent yourself...

What should I do?

Perhaps tell the hotel so that they may repair the problem?

Do I need an international attorney ?

You may, but assuming the stitches heal without further incident the cost of hiring an attorney may not be worth the investment.

Do we have a case because not a single airbag deployed in my wife's accident with our 2015 Dodge Ram 1500?

Maybe. The question needs a lot more details. Be sure to preserve the vehicle (and bags) "as is".

How do I get the other person to accommodate my trucks damage if I have no insurance?

You may have to sue. Small claims court may be your best option.

Can I sue the other party for loss of wages if I am not injured but it is due to an accident? I am in Texas.

That would seem to make sense. If you are not injured, then why would you be missing work?

Can my ex sue me for letting him use my motorcycle with no bodily ingury coverage?

Don't see that being a viable case. (Don't let your ex use your motorcycle.)

While plausible, it seems like a stretch to be successful. However, like all cases, the prove is in the facts.

What should I do ?

Always appropriate medical attention. Next, speak with an attorney. You have short and exacting notice requirements. Good luck.