If you don't want to use cloud flare, duckdns is a free alternative. I think you're German speaking? Here is a German guide: https://dc9vq.de/anleitungen/duckdns-org-und-fritzbox/
If you don't want to use cloud flare, duckdns is a free alternative. I think you're German speaking? Here is a German guide: https://dc9vq.de/anleitungen/duckdns-org-und-fritzbox/