In gambling, nothing is certain. We are not guaranteed a win, so turning our 5k into 10k will be difficult since we rely solely on luck. Although we sometimes have winning streaks, this scenario rarely happens based on our experience. If you are into sports betting, our bankroll has a higher chance of increasing if we are lucky or if the team we bet on performs well. However, this will take time, and one year may not be enough.
This is very correct, but it's actually a two way thing, we could turn our 5k to 10k and may aswell loose it all at some point. Sometimes one can be actually lucky and they would do that just with a stake and it will feel like a flip and the other the person may even fail at several attempts but very importantly is making sure you don't get too emotional with it so you don't give a chance to addiction at some point.