Educate me -why would that be the case? Don't banks lend out money on a fractional reserve basis- that is, money that nobody really has deposited in a savings

Educate me -why would that be the case? Don't banks lend out money on a fractional reserve basis- that is, money that nobody really has deposited in a savings account? Unless we are counting the value of the loan as "savings". Perhaps what I am missing here is that "savings" is really just another kind of debt with the arrow pointed the other way. ..If that's the case, it's interesting that we consider savings to be something solid and real but debt to be something which is speculative and can be cancelled, considering that they're really the same thing.