If banks and governments create their own cryptocurrency, will the people still be the ones to give value to it like Bitcoin and will we be able to store it in our own ledger to protect our own money?
It depends on how they are deploying it. For instance if they are deciding it to be a stable coin then the government will decide it's value and that will remain constant.
The price will never change just like how the value of USDT is one US dollar. If the government is launching it as a normal cryptocurrency then it might depend on the demand and supply of the coin to determine it's price.