Make also a Police report (in general you can make one On-Line to your city website,
or call the non emergency phone line, or go to the police station).
Having a Police report makes your claim more credible.
You might have to go to court for small claim but you need to find the identity of the defendant.
As an example, I had issues with UPS for a missing parcel,
after sending a police report, my claim get solved immediately.
Your insurance might not be willing to contact the other insurance, because and just make it an uninsured vehicle.
Don't accept this, especially if you have a deductible, and you might not have rental coverage in this case.
Aluminium parts are difficult to fix and generally body shop change the part, so it might be quite expensive.
The XPEL replacement might be on your side, unless included in your policy.