The entire website configured with DNS through Cloud Flare is not connected smoothly

My website configured through Cloudflare’s DNS is not connecting smoothly. It is currently inaccessible, and attempting to connect results in the following message:

Gateway Timeout Error Code 504
For more information, please visit
2023-11-08 00:57:58 UTC

What steps can I take to prevent this issue and ensure fast access to my website?