Many will tell you that the only way to get that gains is through finding some memecoins that will grow with that multiplier.
But the risk is greater with them and you have no idea on how they're too attractive but might put you into test.
His greed will undoubtedly lead him to lose the capital he wants to multiply by100X. He will find such attractive and tempting titles on YouTube and through social media influencers and pump and dump channels, advising him to invest in their recommendations, which are most likely new meme coins aiming for 1000X profits. Without sufficient experience from him in analyzing the project and the coin he's putting his money into, he will likely get rugged.
Achieving these huge gains in several months does not seem logical, and there is nothing guaranteed. Whoever claims that he is able to identify these coins that will achieve a massive pump is most likely a fraud. There are established altcoins and bitcoins that can be invested in a less risky way, offering potentially good profits, but they will not be like the unguaranteed gains as meme coins.