See again your strategy and fix the problem, patience and keep learning. Trade/ investment is not simple/ easy, need time & hard works to understand. I suggest you try accept with your loss and keep try to make money on the real market. And Never forget stop loss.
Losing 50% of your capital is normal in altcoins, most of them fluctuate about 20-40% a day. Don't compare this percentage loss with real world stock markets. When you lose this, you should know you can earn it back with the same ratio soon.
I would really love to know about those altcoins that fluctuate this much per day because those assets can make day traders very rich within a short duration of time.
Believe me or not, it is just bitcoin which shows an amazing fluctuation in its worth on daily basis and if fails in doing so, then no altcoin can change its value too much on daily basis. Everyone knows that altcoins depend on bitcoin for their progress.