CNAME records, CloudFlare, Freenom, and disappointment
First of all, I set up a Freenom domain (free domain, if you want to know). I used CloudFlare to set up the CNAME records, and the target was the custom domain Repl.it allows you to set.
But then, a plot twist happened: It wasn't reading the record. I've set it up perfectly with no errors. My disappointment is immeasurable and my day is ruined.