I can't recall ever installing Camotics without sorting out some dependencies.(Linux Mint)
On the other hand I can't recall ever having a dependency problem with a FreeCAD Appimage ?
Maybe something from Camotics discussion helps ?
https://groups.google.com/g/camotics-users
Edit/ Release notes for FC 0.21 mention 'Camotics 1.2.2 or later' whereas the Camotics download page offers 1.2.0
This may not be relevant but where is Camotics 1.2.2 available ? Included in the Appimage ?
Edit2/ For Camotics >1.2.0 stand-alone no pre-built found so it looks like a build your own situation.
Edit3/ Last one I promise. Release notes 0.21 "
If camotics (version 1.2.2 or later) is installed" . If not anything Camotics should be ignored ?
This feels like a bug.
For English help on youtube check out Joko Engineering or Mango Jelly Solutions.
Look for recent videos, this software is updated at a rapid pace.