For direct access to studies at universities, a level B2/s1 is needed, depending on the direction. In addition, if you want to go to Germany, then many universities require knowledge at the level of C2.
For admission to Studyencolon, a level of B1+/B2 is enough.
In addition, you have the opportunity to enter the university through a preparatory language course. Some universities provide them from its entry. That is, theoretically you can move even with the most initial level of language. Although, for applicants at 30+, I strongly recommend that at least A2 level at the time of supply to the visa.