Not only memecoins, i will tell newbies not to rush into buying altcoins, they are more risky that BTC and many of them do not have use cases. If you buy BTC as a newbie and store it for a long time, you can be sure you will make returns, but the case is not the same for altcoins, so many of them end up as dead projects, so you have to be careful of altcoins you buy.