What settings should I use to use the minimum CPU and speed it up? I have a wp rocket plugin.

1- Nginx 1.17.8
2- Php 7.3
3- Mariadb 10.4.12

bro sorry its OLS which is freely available in aapanel check in appstore

Wise-Gorilla
FastCGI Cache is not yet ingrated yet in aapnel and its good in more wordpress sites only varnish is universal