Me personally, I use Steam's WINE client, Proton, because regular WINE doesn't work for SSBC (for me at least). Here's how:
-Get Steam, if you haven't already.
-Next, hit "Add Game" in the Library menu and "Add a Non-Steam Game" (make sure all of SSBC's resources is in an isolated folder)
-Hit "browse" and select SSBC.exe
-Once the game is in your library, go to "settings" (on the right), properties, then compatibility.
-Force a Steam compatibility tool (I use proton hotfix)
-Launch SSBC through Steam and you're good to go!