I am currently a third-year student at a U.S. liberal-arts university located abroad, and I come from a completely different educational system when it comes to taking exams. Back home in high school, we would usually have a suitable amount of times and similar questions, so test completion and a perfect score weren't my issues. I'm now in an extremely competitive environment + many of my econ classes are too optimistic towards my approach too taking exams. I'm now doing a lot poorer than I would want to struggling with time pressure and questions that are too real-world issues based, so I can't find connections that fast again.
Is there any way somebody has overcome the same issue or knows how to improve? Similar tests will still be out there in the next 1.5 years + I want to take graduate school exams, and I feel discouraged a bit, if nothing changes.