dynamat is your friend...
https://2017-ford-raptor.blogspot.com/2018/04/dynamat-and-pioneer-6x9-upgrades-in.html
Yep, inside the door skins and inner panel. I also use 1/4" Dynaliner inside the plastic door panels...really helps quiet things down! Also pretty much anywhere I can access inside the cab. If you're going to go this route, get the Dynamat Extreme Bulk pack, save money and you'll always have it on hand.