I have tried to soundproof my garage. Almost wasted effort. I used 30db or sth sound isolation material on garage door inside. Nahhh.

The best soundproofing material is Asphalt sheet heat glued to whatever door you have . Noise will not come from walls. It will come through windows or through doors. Basically you need all outside possible vibrating surfaces to be hard dampened, not just covered with sth. Of course depends where you live though. I live in extremely quiet neighbourhood where people pay big $$ to come for 10 day at sea and quiet, so my challenges are bigger than yours. I simply can not work at night, but daytime you can not hear it from neighbours.