I just downloaded it to check, the linux release shouldn't have an exe in it. The zip should contain a folder with some .net dependencies and "Gnever Surrender.x86_64", which you should be able to run by extracting the contents and putting ./"Gnever Surrender.x86_64" in the terminal. I didn't export an arm version so if you're on an arm machine that could be why. I also am unable to test it myself as i don't have a machine with linux installed at the moment.