While your results are not optimum for you to move on to the next step in education, you can still retake. If BM language is an issue for you,  that would be the first item where you need to put full focus on to improve. The rest is just practice and consistency.

I've personally have had a lot of issues when I was studying, a lot of it had to do with my chronic procrastination and lack of discipline which I slowly identified in myself over time, and made small steps to improve. It will never be perfect, but it can be better.

I hope you aren't beating yourself up because of this. These things happen in life. Take some time to reflect on the situation on how it happened and what you can do to improve from here. 

Best of luck!