@healthgym
If you are using CloudFlare as your name server You can have more than one Cname record but you can’t have both records be the “root” record at the same time.
I don’t see an issue if you create the CNAME for healthgym.net
as c126295.tier1.quic.cloud.
If your name servers are already: align.cloudflare.net and dana.cloudflare.net or “*.cloudflare.net” you don’t need a cloudflare cname.
You need to move your NS servers completely from
NS1.DNS-PARKING.COM
NS2.DNS-PARKING.COM
To cloudflare, just sign up for the free account and follow the instructions.