I recently tried Ubuntu after many years, needed Docker and it told me to install it as a Snap, I thought, OK, whatever. I'm anything but a newbie, but for the life of me I couldn't figure out where the volumes were actually kept. That was the primary reason to abandon this experiment.
To containerize desktop apps I prefer Apptainer/Singularity, that's pretty portable, usersapce, and requires less tinkering to integrate with the system than Docker. I use it for Zoom and other closed source crap. AppImage is probably the more standard solution for that that's very similar technologically, but I'm already familiar with Apptainer from work.