Is it possible (and relatively easy) to back up snapshots, program data and personal files from Ubuntu 18.10 and 18.04?

The question should be mostly self-explanatory, but essentially I want to be able to move snapshots, programs, (and their data) personal files, and preferably system settings from Ubuntu 18.10 to Ubuntu 18.04.

Can I use a standard Linux backup software for this, would it be a manual issue or would moving the data from a newer version to an earlier version be unrealistic?

Any entry is very appreciated, I do not know Ubuntu very well. I made the change from Windows about 2 months ago.