Landing page based on system language

Your software
My Mautic version is: 3.3.3
My PHP version is: 7.3.23

Hello,
I am currently working on a project that uses landingpages for different languages. The problem at this point is that I would like to give the users the possibility to switch between the different languages(landingpages). But this only works in my case if the system language of the user is German. How can I prevent Mautic from delivering a specific page to the user based on their system language? Because if the system language is English it is no longer possible for the user to switch to the German language.

My Mautic(v3.3.3) system has:

  1. landingpage DE
  2. landingpage EN (translation from DE)

How it is:
User with system language English: Can only call page 2 but is always redirected from 1 to 2.
User with system language German: Can see page 1 and 2 without problems.

How it should be:
User with system language English: Can see page 1 and 2 without problems.
User with system language German: Can see page 1 and 2 without problems.

Can anyone give me a quick advise on how to solve this problem?