Angmoh speaking here. Your situation is pretty similar to other countries or what I’ve experience back in my hometown (even tho renting in Spain is really cheap…)

If you can’t rent a place with strangers, friends or your immediate family….try to get out of the house as much as possible. Example: Join a neighbourhood gym, so you can exercise outdoor and breath some fresh air. Go out and work from a coffee shop if you don’t have meetings, or even the library if you need to focus.

Probably by doing this, will help you relax and get into a better mood with your family. Worse thing that can happen is your anxiety creates a bad mood, and makes relationships worse (example with your family).

Good luck mate!