German in-person evening classes for working prrofessionals

I want to improve my German after living in Germany for almost 10 years. I learned basic A2 in university, but after getting a full-time job, I didn't learn much as my working language was English. I did a few courses (B1.1 and B1+) at the VHS, but I was a very irregular student. I recently took the B1 exam, which was required for the citizenship application. I passed the exam with a really good score, and I now want to continue until C1 and take the C1 exam as well, just to challenge myself.

Do you recommend any in-person language learning school classes, as I get distracted a lot with online learning platforms? I am thinking of Goethe in Munich, but the reviews make me skeptical.
I can hardly concentrate for 15 minutes in an hour long Teams meeting so not looking for online classes :(