The problem with leverage is not the money you make, it's the money you lose that very well can put you back below where you started. There is an optimal leverage for a given trade sequence (see Kelly criterion) and going beyond that is just going to reduce profits, ultimately below zero. Unless you have a very high Sharpe ratio, chances are you can't apply anywhere near the amount of leverage some brokers provide you with (usually without anything but generic warnings like "could lead to large losses").
As for your opening post, there are some people that have achieved an annual return of 1100%+ some years (which is what you're effectively asking), but they're not doing it consistently, because it's immensely hard and in most cases requires unexploited alpha in the market, and/or it was just luck (for instance being long Tesla from March through this year.. nowhere near consistent 1% daily gains on that by the way).
Finally, for a system that consistently returns a thousand percent a year, A) nobody will sell it on NinjaTrader or to retail, B) it will have limited scalability, C) the chance of discovering something like that in developed markets like in major US indices is incredibly slim.