Connecting my iPhone 11 to my computer to print

Hopefully you are using an AirPrint-capable printer. A link in the article below can help you determine if this is correct.

Use AirPrint to print from your iPhone, iPad, or iPod touch - Apple Support

If it is an AirPrint compatible printer it should appear when you choose Print and you are sharing a Wi-Fi network between the phone and the printer. Here is information on compatible printers—>About AirPrint - Apple Support

If you don’t have a compatible printer you will need an app on your computer that emulates AirPrint, such as Printopia.