[SOLVED] How to change themes and icon in rocky linux

step 1: i have installed tweaks.

step2: and went to https://extensions.gnome.org/ and installed and enabled User themes extension.

step3: then i went to Gnome-look.org and download a theme and icon pack, and i couldnt find any .themes and .icons folders to copy or move.

please help me out from step 3.

and also i want to know, how can i install themes and icon packs via terminal, coz its easy to copy paste.

Thanks.