If you are a good trader i doubt you will need funding from someone. Amplifying and speeding up the gains by means of external capital is a trait that wont fit in the traders arsenal. The reason is simple you wont respect the money that you don't own.
Prop Firms:
If for someone they received 10k account by paying 100 USD with strings attached on risk taken and all that. You really are not on the hook to be disciplined since you only put 100 USD not the entire 10K.
You are too Good seriously.:
If you are really looking for a gamble and trust yourself too much then, buy a challenge and get as much money out of that firm and fund yourself. But for a noob this is the most stupid path to take. You wont learn to be disciplined and would waste capital on challenges that otherwise could be used to trade real money.
So where ever you are on your journey, if you are a good trader capital will flow to you. You wont have to buy challenges.