Most of the time we think that we can predict the price right neglecting how the volatility of the market affects the price and possibly changes the trend. Indeed, the best thing to do is to buy at a cheaper price and hold, the wait for the price to rise before selling. But what we usually do after buying Bitcoin, we already think about making a profit right away but if we fail, we then also think it is a scam and worthless investment. In many cases this happens to us, some people have already learned from it while some have not.
That's correct, holding is the only safe way of investing in Bitcoin and not through trading because trading is very risky. Many individuals think they can only make profits when they trade and that's the reason behind many individual getting interested to trade. They don't have the patience to wait for few years for Bitcoin to rise and give them profits. They want to make the profits as quickly as possible by trading but they reject the decision after losing.
Having few incorrect predictions isn't a problem because the market moves so fast that at times your prediction would have been accurate but due to other reasons the market moves in an opposite direction but if you noticed you aren't getting any prediction correct you have to quit.