Price for Citizenship lawyer / Do I even need one?

Hello All

I am living in Germany while my wife is not living in EU due to health reasons. She has done Abmeldung and working in a different country.
I am applying for only my own citizenship.

We are married on paper legally.
The citizenship application form does not allow such scenario and make it mandatory for me to upload her documents (which are not available) like German health insurance, work contract, housing and so on. She has no relation other than me in Germany.

I am not sure how to move past this page where it requires my wife's documents?

Do you think it is better to go with lawyer?
Also any ideas for cost?

I am in Berlin.

Thank you for your help.