Codeberg is one of the largest Forgejo instances, run by a German non-profit, and is where Forgejo is developed. It also has a hosted Actions runner (Woodpecker CI) and is pretty close to Github overall.
There is one important feature difference: it does not allow for private closed-source software. Only temporarily private repos.
Check out this blog for a Github -> Codeberg migration story:
It is.
It's also sad that chickens, fishes and shrimps don't look as cute and aren't mourned even though they suffer all the same. They usually don't even get a plural form.