Excel via wine but xllex.dll is missing

Well, it won't hurt to try that's for sure :smiley:

I've seen posts online recommending something called PlayOnLinux that you might try, as well. Despite the name it's very similar to WINE and can run other programs, not just games.

There are also other office suites that you can try, like OnlyOffice or SoftMaker, which I've seen recommended often.

Also worth checking out this: