itch.io

What version of Linux do you run?  When I export from Construct 2 sometimes the exporter uses out-of-date libraries.  Most Ubuntu distributions should work.
I'll try to find out more though, because I don't like how little linux support I can do right now.

In case you're still looking for a solution or someone else is running into the same issue, you need to install the 32-bit version of the missing libraries. On Debian based distributions, you can do this by appending ":i386" to the end of the package name when installing at the terminal. Hope this helps!