Looking for logging into the Nextcloud Loop site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Nextcloud Loop site. After that you can login as usual with your login credentials.
https://github.com/nextcloud/server/issues/11149
https://help.nextcloud.com/t/login-loop-with-nextcloud12-fresh-install/21185
https://help.nextcloud.com/t/login-loop-after-installation/43394
https://help.nextcloud.com/t/login-loop-with-nextcloud-12-0-3-3-fresh-install/21442
https://www.ryadel.com/en/nextcloud-13-login-page-redirect-loop-how-to-fix-it/
https://www.linuxquestions.org/questions/linux-server-73/nextcloud-login-loop-on-nginx-behind-nginx-reverse-proxy-4175644980/
https://www.reddit.com/r/NextCloud/comments/91nuty/nextcloudpi_login_loop/
https://forum.kuketz-blog.de/viewtopic.php%3Ft%3D639
https://ma.juii.net/blog/fix-login-loop-in-owncloud
https://stackoverflow.com/questions/4616521/nginx-configuration-leads-to-endless-redirect-loop
https://forum.owncloud.org/viewtopic.php%3Ft%3D36363
https://wiki.archlinux.org/index.php/Nextcloud
https://decatec.de/home-server/nextcloud-web-mail-mit-rainloop/