Many garage doors installed after 1993 allow you to add an opener. Often they have a learn button that is color coded. I can add an opener that works with a "purple learn button" on the garage door mechanism on mine. A couple years ago I bought two of these.
https://www.ebay.com/itm/143056052205

Does not install in a handlebar end, but one of them hangs on a D ring on my handlebar bag.

But these ones have a button that is too easy to accidently push when it is in my pocket, twice now I have accidently opened my garage door when I was inside my home and not realized that it had opened and it remained open overnight. Fortunately, no theft occurred.

These cheap ones, you have to be pretty close to the door for it to work, roughly 50 feet. My other openers work over 100 feet away.

Look at your garage door mechanism to see if it has a learn button, and if so does it have a color code?
https://support.chamberlaingroup.com...ge-Door-Opener