Website went down after changing the nameservers

After changing the nameserver in my domain registrar client area , I had to remove my website host’s nameservers and replace them with cloudflare’s name servers ,post which my website went offline and it is down.Note that my host is profreehost and my domain registrar is w3infotech.com. It says you have been redirected too manytimes.

Did you already switch back to the old nameservers? I see so:

 ~ dig -t NS w3infotech.com +short
ns2.w3infotech.net.
ns1.w3infotech.net.
 ~ dig -t A w3infotech.com +short
67.225.236.98

If you wish to use Cloudflare, you can do that by setting Cloudflare nameservers but will need to properly configure the DNS records on Cloudflare first.