I use old.reddit.com, and had trouble logging in from there today. “Too many redirects”. I also use the Redirect to old.reddit.com extension. When I disabled that, the login link it now takes you to is https://www.reddit.com/login/.
I also noticed that the in sub logins where they used to have username/password entry boxes have been removed.
More reddit enshitification to try and make us use their horrible UI.
Really? So, Gmail account is a must? outlook.com/simplelogin alias not allowed?