Due to the fact that price of bitcoin is not very stable, trade for this currency is quite risky. You need to have a large margin, and this is problematic in our time. Now bitcoin is at the stage of falling and therefore to get rich will not work.
I think that the situation now is much better than the one we had a few years back. In 2014 and 2015, the exchange rates were swinging by as much as 15% to 20% in a single day. Now the maximum 24-hour swing is 5%. This is an encouraging sign
Such comparisons are heavily misleading
Two and three years ago prices were five times less than they are now, so you should compare prices and their volatility on equal terms. Otherwise, I could claim that today volatility has grown as much as the price itself. And back then, the max numbers in the price change per day were around 20-30 dollars while now they in the range 100-200 dollars. But you seem to be wrong even on your own footing, price can still change the same 15-20% daily (150-200 dollars in absolute terms). This doesn't happen every day, but it didn't happen everyday back then either. I had been actively trading in the summer and fall of 2015 at Bitfinex, and the average daily volatility was around 5% in those days (if not below) with prices in the range of 200-250 dollars per coin