I don't trust banks in my country.
Can't you use banks in another country?
I don't trust banks either. Within EU, it's "guaranteed" up to 100,000 euro per person if the bank fails. That money comes from other banks, or government.
That means, if a big bank fails, it's too expensive to fix. Hence the term "too big to fail". If that happens, your economy has bigger problems than your savings disappearing into thin air.
Banks really have us by the balls!