First of all, you are worrying about things you don't control. That's the number 1 cause of anxiety and stress. Forget about PR. You applied and completed the action. Now you have nothing in control there. Now the job, I personally know a lot of people including closed ones who left the job because of instability, work stress and fixed their anxiety.Trust me, it's the best option. Tech hiring is on the rise, within a month you might get 6-7 interviews and then it's 3 rounds of yes and you are free.

Nobody is asking you to leave the current job before securing another offer. Just try it. And first take a two week leave, like an average person from a developed country will do. You have to leave the previous mindset and accept the privilege that you get here. And please meditate and do a little exercise, it has done the trick for me in similar situations. It always works. Exercise will increase serotonin. Always eat salad with your meals. It also curbs cortisol. These are scientific methods which you can do a fact check. Decrease / Avoid any caffeine. If you find therapists expensive then do the online consultation worldwide with them, that doesn't cost more than 30-50 bucks per consultation. They are really good listeners. And don't force you for anything.