I use the PARA (Projects, Areas, Resources, Archives) Method to organize documents and general files.
My home stuff is organized by categories like Financial, Legal, Medical, Pets, Vehicles and then by year. It takes time to build the habit to make sure you stay on top of everything that comes in and put it in its right place.
For media, I follow Plex's file heirarchy still so I have TVs and Movies then divided by Normal and Kids and then just put the series or movie in its own folder. My music is just artist name and then CDs inside their folders. I mostly try and get full discographies when downloading music.
I don't download pictures and memes because I'm not organizing and tagging photos. At most I have a wallpaper folder for ricing my browser. I haven't changed my desktop or phone wallpaper in 10+ years.
Every software installer goes into a Programs folder and gets cleaned out every quarter. The Downloads folder is never used because I have rules of where every file type should go.
For games, I have them organized in folders by console for ROMs and then their emulators set up in Playnite so I can see all my games from Steam and my local installs on one dashboard.
What you're ultimately trying to accomplish is reducing friction in the system you are implementing. DropIt can automate some of your organization process and Everything Search will help you find files. Bulk Rename Utility and MP3Tag also help with nomenclature and music tagging.