Just about all of those thin metal garage doors can be breached quickly.
I have solid wood doors on each of my garages (probably weigh 400 pounds each, and that's for a single-car-wide door) and gear-drive openers. Plus deadbolts.
It's about as secure as I can make it, short of something more industrial looking.
Also have other things inside each garage for further protection, but those will remain a secret.