How to connect my iPhone to Mac 💻 pro

There are pages of articles to help connect products via Continuity..

• Use Continuity to connect your Mac, iPhone, iPad, iPod touch, and Apple Watch - Apple Support

https://support.apple.com/en-us/HT204681

..& choice ones that may actually be needed to resolve present issue.

Read through and check the articles against iPhone settings first.

That's the one which seems to lead the others in procession.