Hello German learning community. :)
I, a native German speaker and language learning enthusiast myself, are happy to help if you have any questions while learning German. Whether it's about grammar, phrases, special wording you need help understanding, any quirks or whatever you'd like to know, just feel free to ask.
I've decided to not give any unasked advice in other threads or posts, because I don't want to disturb your learning experience. Therefore I make this an open offer so that it's totally up to you if you wanna accept my help or not. :)
I am not a teacher of any kind, so my help is far away from being professional. But as I said, I like learning languages myself and also exchanging about it and helping each other out. So I'd be glad if I could help you in any way.
Ich bin gespannt auf eure Fragen und wünsche euch weiterhin viel Erfolg und Spaß beim Lernen!
Edit: Because of some federation issues I cannot see some comments to my post and if I cannot see them on my instance I can unfortunately not answer to them, as well. So if you ask any question and I'm not reacting then it's not that I'm ignoring you, but it's probably due to federation not happening probably. :(
I hope, this will get better in the future with further developement of the threadiverse software.
There is Goldfish, which was started with beeing some sort of TikTok alternative in mind. But it's stuck in a very early stage and doesn't seem to be developed anymore. If I remember correctly the Admin started it as a practice for themself to get more into Activity Pub.
They have a Mastodon account and a github page, maybe you can ask them there if they plan to develop it further. And since it is open source and can be forked by anyone and everyone can contribute to it, maybe someone will be found who is interested in continuing to work on the project.
On Goldfish's github page I also found Vidzy by accident, where developement seems to be more active. However, I found no active instances so far where one could test it.