Part of the confusion about Settings may be because @Pearlie is using macOS and that has an overall ‘Preferences’ item/action that then displays the ‘menu bar’ items of the application being used, whereas Windows/Linux applications show the menu bar items at the top of the application window.
Using Manage Resources to Import a ‘Symbol Library’ (used to be called a Vector Library’), or putting the .svg file in the Symbols subfolder of the Resources folder, only works if the .svg file concerned actually contains symbol tables. A Symbol Table is a specific type of SVG construction.
So, if you have an .svg file that simply contains a set of vector objects that you created (or collected from somewhere) then it will not be accepted as a Symbol Library by krita and will not show in the Symbol Libraries docker if you simply place it in the Symbols folder.
You need to have an .svg file that has been made with a Symbol Table in it.
I made a brief description of how to do this some time ago, here:
Make your own Vector Library the sneaky way
(They used to be called Vector Libraries.)
Sadly, because of the Great Dropbox Disaster of April 2024, the link in that topic doesn’t work.
Here is a more modern and working link:
My-Little-Vector-Library.svg - Google Drive
Here is a more compact ‘Minimal’ version of the symbol library:
Minimal-MLVL.svg - Google Drive
(That does not have a preview image because it’s minimal.)