Discovering what the big guys are buying for instance, institutions, whales etc can influence your buy decision for a particular asset. Imagine you found a token whales are throwing in millions at 50Mil M Cap. You can easily predict that such token will reach above 500 Mil M Cap.
But that will not be easy to find which coin or token gives you a hidden gem. You can see what whales buy but you don't know when the price rises. Although you can buy a small amount, you need to be careful and selective with the lists. Those whales will not tell their plan so you might just guess what will happen later.
That will need the right allocation of the money to buy. You can not just go all-in because the whales buy a coin. But many people don't seem to understand this and they prefer to go all-in because they think that the coin will increase soon. If you can allocate your funds correctly, you will have a chance to diversify your coin into many potential coins. But it still needs analysis to find the right coin.
The trouble with this method is that whales do not announce they will buy something before they buy it, hence you can't really know anything beforehand. It's going to be pretty hard to determine what the yare going to buy and that is why we should not be expecting that well right now, it's just not that easy. Of course it's not impossible, some people do it, but you do not have 100% correct rate anyway.
This is why if you really want to make some good return, then you are going to end up with a positive return while having some losses. I would suggest, do not be fixated on this, look for other ways to make money, but if you do happen to get something, then maybe give it a shot, be careful, and always have other plans as alternative.