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I think minimum withdraw is not really a big problem.
Most of the casinos right now only have a minimum withdrawal of around 10-20$, and yeah while you don't want to gamble anymore but the fund can't reached minimum withdraw. Rather than better more ended with losing, why not deposit the rest of the balance you need to reach minimum withdraw.
I've been doing that on my first months of me playing at online casinos. I'm just new that time and because of my small balance or those that I've won from participating on games and rounds aren't that big that is why most of the time I am not reaching the minimum balance to be able to withdraw.
But then later on, I found it hard to withdraw since I want my balance just to be there, waiting to be played anytime.
You can just use your balance for playing gambling and have fun.
I think you can win more money someday if you are just playing gambling and not thinking much about winning or losing.
I prefer to leave my balance on my account if I can not win to back anytime to the site and continue playing in my free time.
By doing that, I do not have to deposit more just to play gambling.