Yes every market asset is normal if they can go up and down, different in Bitcoin because that's the product we buy and cause the supply is very low now so if someone sells it or buys it, it could have a big impact on Bitcoin. The main reason is because of the supply and demand in the market more and more people are insisting on buying Bitcoin, the price will definitely increase and more and more people are selling there. Bitcoin prices also decreased.
I agree with you about people who sell bitcoin now. They don't understand said holding it is the best way to wait when the price is low.
Holding and buying more at dips may be the best way for those who are going long in the market and believe in the future potential of what they are holding for the long term benefits. Like Warren will say, buy when everyone is selling and sell when everyone is buying. The rule of the game that works pretty good for long term investors but you must be willing to have patience. In that regard, you also have to understand that this may be best for investors, but not generally the best, which is why investors with proper trading knowledge tend to do well in the long term.