But when is the right time to buy? When it's on ATH? Before you buy, try to study the fundamentals and technical analysis first. Many newcomers say they will buy low, but when? Because they didn't know much about it, they bought it at a high price, and when the price of bitcoin dropped, they had to sell it at a low price. You need to learn it first to avoid losses. So try to read and watch videos about bitcoin.
Most of the new comers always keep to tell that they'll buy when it's very low. But what happens? when the low comes, they will tell another metric that it should be lower than before because they think that the dip will continue and it's going to be worse than the first price that they've said.
As the price continues to drop, there will be a lot of emotions being played by the market itself and that's going to make everybody worry from their own decisions being done. But as you can see, if many have bought during the $15k a while ago, they're already in profit because the price of bitcoin flashes back quickly to $17k and about to enter again $18k.