Buy or wait and see?

The key is how you view this market, do you want to buy or are you just bearish. If you always want to buy: the only difference between buying now and buying later is that if the price is higher later, you will regret why you didn't buy when the market plummeted.

If the price is lower later, you will regret why I went all-in when the market plummeted last time, why not leave it until now and go all-in;

This will lead to a problem, it seems that unless you have the ability to foresee the future, it will be in vain.