thanks,

I did some further research and it turns out that Vodafone, my provider, seems to only allow bridge mode if you use their own modem/router combo for all available options / your own modem/router for a specific data tarif. Wich I do not have. I’m gonna have to call them and ask if I can even do that with my current fritzbox or If I’ll have to get another device from them or some other option

Thanks for the link.
Would this work as well: https://www.ebay.de/itm/256306276743?amdata=enc%3AAQAIAAAA4I3TBZc4Um19jMA6z51YUSX64Ee0yVtgHBwKP230ehBSAUiveMr3PIQlvEWLueoeqf9lKUuQQF8qkO0nx%2BK3qWJ17LX47WzYhIlBX6edPgIUAGEiaK9apTJJ4QsNpkgwvEytO9Ft%2BhYxoV9Wei0LEH7zBE30LiI10H2HO9NI41Rcgq62c8ClwJnMEZ4mn0lTU2JFLWaAMcZZw3%2FZbnQfo595nrlyny8fRme1D%2BiJWhHEhGaadmPR39J5Ewxdvfp0FBrbIbPP0ihPJ2GxjYdpg4%2Bf20xTp4RHJHmTU%2BaUDbCh%7Ctkp%3ABFBMmuuA4IBj

I know that my FritzBox has docsis 3.1, and this one has docsis 3.0