Nothing wrong to test your luck even with a small balance.
It's free balance anyway, so we are not losing anything. Don't underestimate a balance 10-30$ ~XD, I have some experience multiple time always all-in everytime win the better with more than 3-5x times and can get more than 1,000$.
I have been gambling with that kind of low amount for years, it is always a good return if you are not expecting anything. Obviously, I lose a lot more than I win if you look back in time, however I do not earn a little and lose a little more and then end up with zero, I lose a lot and then one day I earn a huge amount. Think of it as 30 bucks a day, than once a month a big 1000 win, and that's how you end up in profit, and that's how it covers all the costs involved.
It is not a unique method to me, I know that but it is the one that I have the most fun, it doesn't get me richer, but it does make me excited at least once a month to see that huge return.