Well it was really me, but I have no idea what happened… Here’s the TL;DR
I did everything properly according to https://www.digitalocean.com/community/articles/how-to-set-up-a-postfix-e-mail-server-with-dovecot
However this broke a lot. anytime I type my web URL it redirects to /mail and if I try x.com/index.html it automatically goes to /mail, which isn’t there and I cannot seem to find anything wrong in the apache2 config.d. I also tried adding .htaccess files and the same error still.
If I try to access a page that uses cgi-bin I get an authentication required popup, it says it requires authentication.
I just want a nice simple solution for email, and this really blew up.
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