If you go abroad, don't blindly follow the trend. There are too many people going abroad now, and many foreign schools are not good. You are desperately recruiting people just to collect your tuition, so consider going abroad. Generally speaking, you can't change your major when you go abroad, and the cost is relatively high. Going abroad mainly depends on three contents-undergraduate school, GPA at school and language achievement. If you want to go to Germany, you must do APS audit. Others, such as club experience and social experience, play a supporting role.
Generally, the purpose of studying for a doctorate is to enter a university teaching or scientific research unit. If it is only for employment, it is of little significance to study for a doctorate. Moreover, domestic doctors are very bitter, and they will be 30 when they come out, and their competitiveness is relatively weakened. By the way, doctors abroad are jobs, which are essentially different from those in China.
I hope it helps you.