I know studies take a lot of time and often don’t leave much freetime, but maybe it’s still worth to try an online TTRPG platform with your group? I am playing regularly with a group on a selfhosted Foundry TTRPG server and also on Roll20. It works well and we’re sometimes even on different continents.

Anyway, I wish you the best luck, either with the same or with another group :D

It would be funny, if his whole existence wouldn’t be so sad for the world…

Yeah, same here. In Germany WhatsApp is extremely dominant. I tried to move to Threema, but only a couple of people are using it in the end, even after discussing the whole Facebook thing. Some people are also on Signal, but again, only a few. In the end, especially for groups, I still have to use WhatsApp.