nested function calls

1)
function checkBalance(balance, withdrawAmount){
    if (balance >= withdrawAmount){
        return true;
    }

    return false;
}

function withdraw(withdrawAmount){
    return withdrawAmount;
}


const run () =>{
    if(this.checkBalance(balance, withdrawAmount)){
        this.withdraw(withdrawAmount);
    }else{
        alert("insufficient funds");
    }
}
2)
function checkBalance(balance, withdrawAmount){
    if (balance >= withdrawAmount){
        this.withDraw(withdrawAmount)
    }else{
        alert("insufficient funds");
    }
}

function withDraw(withdrawAmount){
    return withdrawAmount;
}


const run () =>{
    this.checkBalance(balance, withdrawAmount)
}
I personally feel like 1) is better, because nested calls will add complexity to the logic, but what do you guys think?
I am more interested in what would be the best method, the code is just a simple example