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):
https://wiki.archlinux.org/title/Touchscreen
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