I am trying to make redirections to prevent www and non-www duplications on the website I built with hostinger website builder. Whatever I tried, cloudflare doesnt seem to have effect on redirections
The only DNS entry that points to a webserver is your CNAME to hostinger. But that is set to DNS only so requests are not passing through Cloudflare so page rules won’t do anything.
You can add a CNAME for www to the same connect.hostinger.com target, but the Hostinger webserver must be configured to server content for both usfnetwork.com and www.usfnetwork.com.