The excitement in the altcoins market at this time is not so visible as it was in 2023 so most investors think it is not the best time.
It's more visible this time IMO because if you're looking for the sign, once Ethereum pumps, then majority of the altcoins are also going to come along with it.
However since altcoins are a very large market, it is very important to save altcoins if you want to get more profit in bullish markets.
But not all of them are gonna be worth of your money.
Also don't focus only on bitcoin because if it goes down again then you have to waste big time. Also the long term savings process does not require much caution as high level tokens are best for this reason.
If you don't know how the altcoins play in the market, it's best for a newbie to stick with Bitcoin until gets familiarized on how it goes with the altcoins market.