That's right, just because someone is an expert in something doesn't mean they will always be right about everything related to that, so even if someone has a lot of expertise about the cryptocurrency market, their predictions wouldn't always be correct because the market is unpredictable, and many times, it moves in directions that weren't expected by anyone in the market.
The recent dip in Bitcoin's price is a big example of this. A lot of people got liquidated in the dip because they had longed Bitcoin and many other cryptocurrencies but it fell down and they all lost money, one trader even lost $1.1m during this.
Everything in crypto is unpredictable also most of the gurus out there are frauds they will teach you to trade but the fact is they don't have any proof of profitability even if you ask them for overall performance but they can't provide any. If you want to become a trader you need to be consistent and start learning by yourself the basic trading that you learn from research should be enough to start observing and trying yourself to trade you are the only one will discover what behind on the chart.
I learn something from gurus from youtube but all guides and trading strategies do not work in crypto market its too volatile but find the support and resistance work that's the only guide that works but the 1 to 3 percent rule in trading plus the wrong position will always hit by overextended spikes because crypto market is manipulated only for little spikes but if you are advance to think that there is someone who does hunting stop-loss be advance and put the position under over extended spike.
Its just only my experience but I still keep learning from my own gurus outside and on YouTube not all are working you need to backtest and test yourself if you can be profitable tradingview should be the best friend tool you can use with free papermoney that you can trade inside their tool.
Trading costs a fee everytime you do a trade you pay a fee to do the trade.
Planning when to release a coin or a stock is important. Waiting to buy a coin or stock is important.
takes lots of discipline to not chase a losing position. takes a lot of discipline to not press a winning position.
takes a lot of discipline to say oh well and move on if you bombed.
the best traders are not the ones that whale like mofos in a bull.
the best traders are the ones that do not get crushed on down turns.
So yeah pro traders have very long losing spells maybe two years in a row or more. but they are pros and can handle it.