Next to your starting capital It is generally risk/reward. The lesser the risk the bigger your start capital needs to be.
Investing in a casino bankroll is maybe a thing to consider.
Investing will always be risky no matter how small or big your investment is but imo, the bigger your investment or capital is, the higher risk that you can have with it.
It takes risk to invest but it takes a long time many do not have the patience to wait. No one can say when the market will go in any direction you can earn up to 200 from casino sites and daily trading it is also a good idea to buy low priced coins and sell them at high prices it is also a good idea to stock up if the market goes down.
Casino investments are less profitable compared to trading and it may not be really suitable for someone looking to reap the profits every month because you need to hold your invested amount in the bank roll for very long term to get decent amount which is in single digit for sure.