What do you mean by you lost the APK? Go to your play store and download it. If you mean you lost all the authentication codes as your device was not backed up to your email, pretty bad luck then. It's kind of impossible to get it back. What you can do is email the support team of the website which you want to access with your proofs of account ownership and they can remove the 2FA and then you can re-install it again.

Also If I am not wrong, there is some sort of recovery code which you can use to get access to your accounts.

If you have an account on exchange and activate 2FA. You should back up the activation code that will be used as recovery code too.

If you don't back up that code, when your phone gone, broken, you will can not recover it by yourself.
The option left is request support from that exchange and wait. They will require you to provide some information, KYC to remove your current 2FA, then you will be able to set it up again with a new activation code that you must back up.

Bitcoin is for everyone freedom but it was not created to help governments fixing their loopholes in their central bank systems and their economies.

If they want, they can join and use their national treasuries to stack Bitcoin but if their economies are weak and vulnerable to global financial crashes and shocks, Bitcoin can not help.

Community are biggest power but if governments support Bitcoin, accept it as one of payment methods or better make it legal tender, it will be beneficial for their communities and citizens but again it won't help to avoid their economic crash from central banks.