Power of Risk/Reward ratio

Strategy with win rate 30% will make you a successful trader
Assume initial capital :
10000 USD
Total No of trades : 30
No of winners : 9
No of losers : 21
Risk amount : 100 USD /trade
Reward amount : 300 USD / trade
Risk(%) : 1 % per trade.
Risk Reward Ratio : 1:3
Win rate : 30 % Loss rate : 70%
Total P/L : 2700 – 2100 = 600 USD .
So, Profit = 600 USD.
Gain (in %) = 6 %