Apex domains cannot have CNAME records.
Question and response
Question
dig xlgames.gg. NS
Answer
xlgames.gg. 4 NS leif.ns.cloudflare.com.
xlgames.gg. 4 NS aria.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0