However, judging from your situation, I think you have some misunderstandings about MBA:
Although MBA education is to give you a master's degree, MBA itself is not a degree education, that is to say, if you just want to get a diploma, then don't go to MBA, which is very difficult and expensive. It is difficult for you to apply for a good school under the current situation.
The name of MBA is MBA. However, good MBA programs generally do not teach management, but are very targeted, and different schools have different priorities. For example, Harvard's slogan is to cultivate world leaders, so he aims at leadership and vision. Wharton is a century-old financial college, and it is bound to be strong in finance and financial fields. Kellogg is unique in marketing. Therefore, without a clear career plan, it is difficult to get into a good school, to study, and even to find a suitable job after graduation.
Most MBA graduates' first job is finance, consulting or marketing, so don't choose MBA unless you want to do such a job in the future.
In addition, I would like to ask, why do you want to take the postgraduate entrance examination and go abroad?