How can I backup my iPhone from my Mac if my phone is broken

To back up your broken iPhone to your Mac then you will need to lug it in via the charging cable, and the iPhone will still need to kind of work. Please refer to the link below for more info about how to back up your iPhone to your Mac.

Back up and restore your iPhone or iPad to your Mac or to iCloud - Apple Support

Melygris Said:

"How can I backup my iPhone from my Mac if my phone is broken"

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Please Clarify your Post:

How exactly would you define "broken"?

Use a Hardwired Connection:

Try plugging it into your computer, providing as instructed here: How to back up your iPhone, iPad, and iPod touch with your Mac - Apple Support