Is it the trim that goes inside of the garage doors frame? About 8 or so inches wide? If so you’re probably looking at either prevent alhminum fascia or aluminum trim coil. Most any general contractor should be able to replace it. The prebent stuff is easy peasy, the rolls of trim coil take a little more care but its still not that big of a challenge.
I personally programmed all of the robots that weld together the frames of every Nissan pickup truck except for diesel models made after 2016. I also did the same for any Ford f-350 to f-650 built after 2017.
Over 50% of our population reads below a 6th year education and our school system has been steadily defunded and dumbed down over the past 40 years. A large portion of Americans only have 2 brain cells and they’re both busy fighting for 3rd place. Ignorance and a lack of critical thinking skills is what has gotten us into this situation and I don’t know if we have what it takes to get us out of it.
Op said significant projects, not successful ones ¯_(ツ)_/¯