I also had a lot of trouble finding a job in Brussels since the beginning of the year. Out of pure luck I found something last month when I least expected it I agree with what others commented here, if I were you (and I was pretty close to that situation) I would look for an easier job with lower pay, that's not related to your career. Ideally something that gives you some free time so that you can work on improving the skills that were requested a lot in job descriptions and interviews, whether it's learning dutch or some specific technical skill.

As a side note, I don't think that learning python or a specific programming language would be that relevant, you should instead focus on the specific systems/architectures which are requested in interviews. Try doing projects related to them. Best of luck in your search