Garmin HRM Pro Plus - Zwift on Mac - Matrix ICR50


right now I am looking for a indoor trainer for training in watopia. I had a stronger look at the Matrix ICR50, because its listed on the Zwift list and its just 999€ in here in Germany.

So my question is, how do I get my things connected? I have the following things:

-Mac mini M2 (No ANT+ dongle or so)
-Garmin HRM Pro Plus (Heartrate Cheststrap)
-(Maybe then the) Matrix ICR50 with BLE
-(Dont know if it makes sense with Zwift) Garmin Forerunner 945

How do I get the best out of all these for inddor riding and live data sync?

Thanks in advance!