HELP [How do I disable the "Find" key command (command F)?]

I generally use Reset workspace to return shortcuts to their preferred (by me) state, and Essentials > reset Essentials to return them to their defaults.  This lets me tie alternate uses for shortcuts to my custom workspaces, but lets me quickly get back to the defaults should I ever need to.   This is made very easy by virtue of using a Gaming keyboard with programmable 'G' keys.

Tools like this greatly improve your Photoshop workflow, and are well worth the investment.  The screen shot above looks to be set up by a gamer with the WASD keys highlighted.  With this keyboard you can set every key colour independently, and while I have done this on mine with Photoshop in mind, I don't think I get any advantage from it because we tend to hit the keys we want without looking at them.  It looks nice though, and we all love shiny things.

You can customize the keyboard shortcuts by going to Edit > (maybe Photoshop on a Mac) Keyboard shortcuts.

Then go to Filter, and change the shortcut for Last Filter back to Cmd+F.