Is there a way to reduce desktop icon spacing

[Gemini6]

Thanks.
I am not 100% sure if I understand well, but I started all over again, by following your procedure step by step, after having set the icon size to 50.
Strangely, my desktop icons don't change any more...
When I type.

Code:

ls -l ~/.config/gtk-3.0/

I get.

Code:

total 8
-rw-r--r-- 1 default default  20 Jul 23 03:41 bookmarks
-rw-rw-r-- 1 default default 109 Jul 25 13:00 gtk.css

Maybe the permissions are wrong??
Anyway, now by reducing icon size, I can have 8 rows of desktop icons. So, I think I can live with that..