I did a quick search as I recalled this thread came up before. This is possible on paid plans, not sure customers on free plans were successful or not based on reviewing the suggestions on this thread, Cannot access sites from Russia - #23 by nick.ivanter Let us know if it’s helpful for you or not.
Hey! Thanks for your reply. I think that CF use ECH for it domains e.g site.example.pages.dev - this is example of cloudflare pages deployment domain. That’s why when I set CNAME to this DNS and disable ECH for my domain anyway I have ECH