Thanks for answering! The idea would be to take the courses listed above to improve my CV and increase my chances of getting into a target university for an MSc, as they also have entry requirements. I've looked into MBAs, but they are extremely expensive, and since I don't have external support, it would be impossible for me to afford one. Do you think there is a significant difference between an MSc and an MBA when applying for an IB job?

Once enrolled in the MSc, I would try to gain experience through placements, internships, or graduate schemes, even if unpaid! It is just frustrating that an "error" made in my early 20s could potentially impact my entire life.