Your name servers are still reporting as Cloudflare’s: https://www.whatsmydns.net/#NS/marseem.com
And, if you deleted the site from Cloudflare, that explains the problem.
If you did properly change the name server back to your hosting provider’s, you’ll need to wait for your site to work again.
When a domain is registered or altered, there is a process called propagation, where information about the domain name is passed to internet service providers all over the world. This process can take up to 72 hours (though usually much less). During that time, your domain may not be available, may go to its old location, or you may receive a warning message in your browser about “redirect errors.”
If you still have trouble viewing the site after 24 hours have passed, please try clearing your browser’s cache: https://www.refreshyourcache.com/
If that doesn’t work, try clearing your local DNS cache: https://www.whatsmydns.net/flush-dns.html