It is very easy to loose perspective and go down the path of seeing yourself as a failure. That does not mean it is correct.
When I read your story a see a young person sent to foreign countries where you did not speak the language well, and were motivated to a great degree by your parent's expectations. A sort of trap.
Then depression, which is sneaky and creeps into life without you realizing, just finding things are wrong, that study can't be done, and guilt heaps up.
Despite all of that you got a degree , something that might come easy to a few, but not those who have had to face the obstacles you have. That realy should have been the end of it.
Now your family is pushing you though exactly the same all over again. I'm well aware many regard academic achievement as the most important thing of all, however that is a mistake. Your health and well being are the most imortant things, not only to you, but hopefully to your family too.
So I'm wishing you luck with your withdrawals. Your medical support should be able to convince the university, and may even be able to go some way to convincing your family that pushing as they have been is self defeating and cruel.
Not everyone is cut out for advanced foreign study, many have other qualities, and sometimes parents cannot see this, however that is their failing, not yours.
If you did not feel obligated by that debt burden, but tried to look on the whole matter as a means of discovering yourself and what you could and could not do what would you like to do with your life?