No if you have 10$ you use 1$ , for example I am trading BTC now and I risked 2600 naira to make 26k naira , so that is it , that is a good reward because Forex is 99% risky so anything can happen so you don't risk everything
I believe that the key factor to being a profitable is looking out for liquidity sweep,because this shows you a false breakout and the direction of the market