I consider myself a beginner, but I know one principle: generally do not short Bitcoin.
Even if Bitcoin drops, the extent won't be very large. If you want to short, I think those altcoins are a good choice. In extreme one-sided market conditions, these altcoins can drop 20% to 30%, or even get halved.
(However, the gains of altcoins can also be significant, so it's best not to leverage altcoins too much.)
Every drop in Bitcoin is a pullback, and there will always be a time when it goes back up.
Shorting to recover this profit carries significant risk, but the returns are limited.
Choosing Bitcoin is the ultimate choice in the cryptocurrency circle.
Because no matter how high altcoins rise, they will eventually choose to sell and then exchange for Bitcoin.
Altcoins rise just to offload. They can grow a lot during a rally, but during a decline, they can drop to the point where you question your life.
Generally speaking, retail investors rarely have the opportunity to enter before a rally due to a lack of information.
Instead, retail investors tend to buy in after a rally, not to mention that many people are contract players. If there is a decline at this time, many people will be doomed.
Bitcoin represents the market's barometer. If you are a spot trader, buying Bitcoin is a long-term stable growth choice.
Of course, most of these are my insights and opinions, which may not be correct. If there are other viewpoints, feel free to bring them up.