Can I use an ordinary Samsung Tablet with a Linux system? No touch system but with mouse and all the trimmings as if it were just a laptop or something similar. Is there a way through a VM or something in the direction?
Depending on tab → linuxondex.com
Look after Ubuntu Touch otherwise vm with Linux deploy from the Playstore with vnc Viewer.
And that is then a desktop version that I can use with mouse etc?
With an adapter for connecting mouse and keyboard that can certainly! I did this myself successfully with a wireless keyboard on a Huawei tablet. Since this keyboard has an integrated touchpad, I could use these easily.
Addendum because interruption: I used the original system of the tablet. With a docking station should also all other hardware such as hard drives, printers u.a. Use.