Right click on the touchscreen?

It seems as if my touchscreen is detected as a mouse (that was the case in Linux Mint) and as a result I cannot do any touchpad gestures on the touchscreen in order to right click and scroll, making the touchscreen unusable

In general (as per the infos you have given so far):

The main issue is that I cannot right click, touchegg never worked for me on LM, and under the devices it was recognised as a regular mouse rather than a touchpad

It would require much more infos to investigate any further.
What is your hardware? What drivers are in use, etc.

inxi -Fxxc0z | eos-sendlog