we need more info... e.g. a console trace, put it on pastebin
also which distro etc.
there wont be any objects/patches until you sort out the certificate issue...
what you can do as a temporary 'fix' if you want is to install factory library manually.
i covered this in one of my videos : https://youtu.be/NP9YcWE4xRM
this is far from ideal, but it will mean you can use axoloti whilst you resolve your issues.
also, personally I think with Linux, you need to know your way around linux reasonably well. the issue, as Ive stated in the past, the issue with linux is there are too many differences between distros to effectively support. its a shame, as I think many of us would like to see Linux become a viable desktop OS...
but currently, Id not recommend it for 'end users' , they will find windows/mac os less frustrating.
of course, Id welcome other axoloti users using linux to jump in and help improve this, e.g. perhaps add distro specific info to the user guide.