Welcome to the Forum, @mszawronski! 
You should already be able to do something like this by using a Wyze Plug or Bulb as an intermediary, acting essentially as a logical switch and bridge between Wyze Automations and Alexa routines. You could create a Device & Service Trigger Automation in the Wyze app to turn on the Plug (or Bulb) whenever a given camera detects motion and then create an Alexa routine so that when the Plug (or Bulb) turned on that would be the trigger to turn on your garage lights (if they’re smart lights or connected to a smart switch). You should be able to do this even without a subscription.
You may also be interested in these Wishlist topics:
As with any Wishlist topic, you can visit those to click or tap the Vote button above the initial post and share your ideas and use cases in the comments to show your support for the product and feature request/suggestions that are important to you.