Hi, I'm sorry but I can't speak German so this post will be in English.
For many months now, my internet connection has died almost every day, especially when I'm trying to stream on Youtube/Twitch. Sometimes it dies randomly when I'm just playing games or hanging out on Discord with friends, or throughout the day when I'm working from home. I live in Berlin and have a cable 1000/50 contract. I use an ethernet cable to connect.
I have already tried things like changing cables, resetting the router, etc... Whenever the connection dies, it dies for every device (so it's not just a cable/wifi issue).