Make 1 bitcoin in one month without investment it is impossible, there is no way earn 1 bitcoin without investment, if you want to trade then you need capital, if you want to mining then you need tool mining, all need capital or investment
Very impossible if you will enter an investment. But if you will use your talent and skill you can make 1 bitcoin per month. But remember that there's no easy way to earn with that amount. Many strives to earn 1 bitcoin per month and they are doing every single legit way of it, just now where you are good at.
)). It's quick but not easy so careful before you start.