Hi. First of all i apologize if something i will write could be wrong. My experience in the gnome desktop is based on Ubuntu, with opensuse i prefer Kde. Open a terminal and login as root using the command su then hit enter and give the admin password.
Now navigate to the user home: cd /home/<username>. Enter the hidden directory .local: cd . local
then enter the trashes folder: cd trashes. Now a warning: i don’t remember if the name is trashes or Trashes so try the both in case of error. When you are in to this let’s delete the files: rm *
If the folder contains directories it’s better to use rm -R *
Hope this helps