The higher your risk the higher your reward and big Altcoins has already grown huge volume and market cap, it will be hard for most of them to give above 2x easily under normal circumstances, that is why people are looking for memecoins that can give 10x and above, and if you really want such reward, then you need to be high risk taker because most of the projects that do give such high returns are memcoins that are just coining up to the limelight, and knowing such coins are really hard that is why people lose money because they believe all new projects will give high reward.
I believe in Altcoins, and I also believe that it is highly risky but at the same time, must of them ate profitable; that is why I said that the higher your risk, the greater your reward.