There are 2 directories of Porto theme.zip on my Windows desktop - "app" and "pub". I put them by simply dropping from desktop into
/app/design/frontend Centos directory via WinSCP. In my opinion full default path after dropping looks like (by WinSCP):
/var/www/html/magento/app/design/frontend. Than I run commands like (but it is no helps):
After that I go to Admin Panel in Content > Design > Themes but nothing. I need any commands, different paths?
Also I have Composer but I still not able to create commands by myself or paths from my Windows desktop to Centos.