Gregory's ServerPixelfed.de is a general Pixelfed server and one of the longest-running, established in 2018:
:Fediverse: https://pixelfed.de
It can be used in English or German.
Pixelfed is the Fediverse's photo sharing platform, you can find out more about it at https://fedi.tips/pixelfed-photo-sharing-on-the-fediverse