I've had the exact same problem for a while. Here are some of the sites I've been unable to access (found by searching for "just a moment" in my browser history):
It's really annoying and Cloudflare is apparently doing nothing to fix it as this has been going on for months if not years. I guess Cloudflare just hates the open web and really wants to enforce Chrome/Chromium/Blink hegemony.
- https://gitlab.com/users/sign_in
- https://steamdb.info/login/
- https://www.zabbix.com/forum/
- https://casetext.com/
- https://namemc.com/login
- https://spinroot.com/
- https://camelcamelcamel.com/
It's really annoying and Cloudflare is apparently doing nothing to fix it as this has been going on for months if not years. I guess Cloudflare just hates the open web and really wants to enforce Chrome/Chromium/Blink hegemony.