I wanted to use RHEL for server purposes, but i can't afford the cost of rhel, but i read somewhere that i can still use rhel without license (of course, that means without support)... but i still want the certificates and the updates.

I was considering CentOS too, but what i don't like is that updates don't come fast, and also don't have certificates... Also was considering fedora... but my main option is RHEL.