You can install Forgejo on Debian GNU/Linux 11 by following the instructions in a tutorial published by Unixcop.
How to install Forgejo on Debian 11 - A nice Gitea Fork
In this post, you will learn how to install Forgejo on Debian 11. Forgejo is a fork of Gitea. It arose from the fact that Gitea was acquired by a company and this didn’t sit well with the community who preferred to make a fork.