How to FIX missing Garry's Mod addons (2020) [SOLVED]

I think I just solved the seven-year-long problem of addons either missing from the Garry&Mod addons folder or addons not being downloaded in the Garry&Mod start menu. NOTE: This will also help if you are trying to download either a map or model to port into Source Filmmaker. INSTRUCTIONS: 1. Subscribe to the map/model/asset that you want in the Garry&Mod workshop. NOTE: You must own Garry&Mod to do this part! 2. Run Garry&Mod and allow the assets that you subbed to download. 3. Close Garry&Mod. 4. If you did not see that the addon was being downloaded in your Garry&Mod start menu, AND the .gma file for the addon is nowhere in your Garrysmod/garrysmod/addons folder, you will first want to go to your (C:)ProgramFiles(x86)Steamsteamappsworkshopcontent4000 folder. 5. Now you WILL have to go through each numbered folder one by one but eventually, you will find the .gma files of your desired addon in one of those numbered folders. 6. Then you just have to right-click that .gma file, copy, then paste it into your GarrysMod/garrysmod/addons folder. 7. CONGRATULATIONS. If this worked then your desired map or model should now show up and work properly the next time you start up Garry&Mod!