I hope the government will create a bitcoin bank, and there would be insurances that if our Bitcoin

is lost in their hands, they will still give us back our Bitcoin.

I certainly doubt that will happen. The scenario that we currently have with the banks is that if your money gets lost because of them, then they are refunding your money. In some countries, when someone hacked you or when you get scammed by someone or just some "theft" stuff has happened, they are refunding your money as well. But the only reason why they do that is because they have unlimited supply of paper money. Yup, unlimited, they are just printing out all the needed paper money and then that's it. Remember, paper money is nothing but paper that people believe it has value.
Bitcoin, on the other hand, once lost is lost. Let's say that the government's very own bitcoin bank gets hacked, they can't do their magic of making more money. Bitcoin is different. They can't just mine instantly these coins and refund their people.