How to add a language to the default languages in Studio 2019 Freelance

Hello,

I installed Trados Studio 2019 Freelance with only 3 default languages, but I realized that I forgot to add one that now I need.

I already tried uninstalling Studio and reinstalling it a couple of times, but it did not present me with the window in which the languages are defined during installation.

How can I add the language I am missing?

It seems very complex, from what I read here in the forum...

Could you please help me?

Thank you,

Annalisa