According to the screenshot you provided to me, you are getting error 524 most of the time (out of all errors that were provided in the screenshot) below are the troubleshooting steps for the 524 error.
Error 524: a timeout occurred
Error 524 indicates that Cloudflare successfully connected to the origin web server, but the origin did not provide an HTTP response before the default 100 second connection timed out.
Enterprise customers can increase the 524 timeout up to 6000 seconds using the proxy_read_timeout API endpoint.
Resolution Contact your hosting provider to exclude the following common causes at your origin web server:
- A long-running process on the origin web server.
- An overloaded origin web server.
Logging request response time at your origin web server helps identify the cause of resource slowness. Contact your hosting provider or site administrator for assistance in adjusting log formats or search for related logging documentation for your brand of web server such as Apache or Nginx.
If you regularly run HTTP requests that take over 100 seconds to complete (for example large data exports), move those processes behind a subdomain not proxied (grey clouded) in the Cloudflare DNS app.
If error 524 occurs for a domain using Cloudflare Railgun, ensure the lan.timeout is set higher than the default of 30 seconds and restart the railgun service.
Troubleshooting steps for the other errors can be found at https://support.cloudflare.com/hc/en-us/articles/115003011431-Troubleshooting-Cloudflare-5XX-errors-Error#500error and https://support.cloudflare.com/hc/en-us/articles/115003011431-Troubleshooting-Cloudflare-5XX-errors-Error#520error