Soliciting recommendations for good German language schools (A1 level)

I apologize if this is low effort but existing questions on this topic are either old or don’t fully answer my question.

I speak almost no German, stay in Frankfurt, and would like to join a language school for the A1 level. Unfortunately I don’t know which schools are good and only heard of Goethe and ZDSK in Frankfurt. They’re very expensive though.

Does anybody know of any good schools? Thanks.