My first idea was to use the Gitea instance of the Free Software Foundation Europe, but T&Cs strongly encourage only projects with direct relation to the FSFE activities, so personal projects don’t seem welcome.
The first-party Gitea platform seems to be in risk of becoming for-profit.
So far I didn’t have any issues logging in even on firefox with all the usual plugins and privacy settings enabled. I think saying that it’s user hostile is a big exaggeration. I see how it’s not ‘non-profit’ but I think it’s still a great place for open source projects. I self host it and use the official page and it has been a very useful, good quality tool.