bluetooth pairing Iphone 12 mini and MacBook air M3

Macs and iPhones don't use Bluetooth pairing with each other. If you're trying to get a Mac and iPhone to work with each other, you would normally use some combination of

• iCloud
• Connections to the same e-mail accounts
• Continuity features
• Connections to other cloud services
• "Manual" synchronization using iTunes or the Finder

Use Continuity to work across Apple devices - Apple Support

Continuity features and requirements for Apple devices - Apple Support

iCloud+ - Apple

iPhone User Guide - Apple Support

Pair for what purpose? Are both devices signed into the same Apple ID? Normally, you cannot connect them via Bluetooth (outside of Wi-Fi hotspot sharing).

Use the Finder to sync your iPhone, iPad, or iPod touch with your Mac - Apple Support