How can I access the hidden Steam folder to back up save game files?

Make sure you're actually clicking on the Name column in Dolphin a couple of times to sort the files; that might help you see the hidden ones better. You can also type `~/.steam` directly into the location bar to access it quickly.

If you're not seeing the hidden .steam folder, try checking `~/.local/share/Steam`. Sometimes directories are in slightly different locations than you expected.

Check to see if you can spot other hidden folders in the same parent directory where you expect the .steam folder. If you can, your Steam folder might be elsewhere. You can use the terminal command: `find / -type d -name '*steam*'` to locate it. If you can't find anything there, try running `ls -a` in your terminal to see if hidden files are even showing up.

You should look in the `~/.local/share/steam` directory. To view hidden files in your file manager, make sure to press Control + H. If you're using a terminal, `ls -a` will show you everything, including hidden folders, and you can `cd` into them. Most of your save files are saved in the Steam cloud, but if you're looking to back up games, that's where they are.

That 'show hidden files' option should definitely work, so double-check your settings. If you're comfortable using the command line, you'll need to know how to use `cd` and `cp` to navigate and copy files. Just a heads up, save game files may be buried further down the file tree.