Too many files backed up - more than indicated in sources

I created a backup configuration with the following sources

    "Sources": [
      "%MY_DOCUMENTS%",
      "%MY_MUSIC%",
      "%MY_PICTURES%",
      "%HOME%/code/",
      "%HOME%/Videos/"
    ],

When I run this backup, many more paths are being backed up. To give an example, the trash was backed up, i.e.
/home/myUsername/.local/share/Trash

Do I need to specifically exlude paths I do not want to include?

Thanks

Welcome to the forum @f.conradin

Not that I’m aware, unless you did something like set symlink-policy to jump into other paths.
Maybe you can test turning off some of those five sources until the unwanted ones leave too.
For safety, you should probably not keep test backups, but delete each after seeing Restore.
The Restore dropdown would give the version information (but newest is always 0) to Delete.