If you want to HODL, I would suggest Only Bitcoin. Most altcoins create pumps for the short term. The dev team spends money on marketing to pump it more. People keep buying when they see that they have touched their target price. The dev team increased the coin supply, and the coin star lost value daily. This is pretty much a scam, in my opinion. So, I won't suggest altcoins to hold.
You can trade with altcoins. Altcoins are too much volatile. It gained price so fast and went down quicker than that. So, if you want to trade with altcoins, you can do so. If you want to HOLD Crypto long-term, there is no coin except BTC.
Things that you should are limited to just buying bitcoin and holding as long as you possibly could, that's the "should" part, that's what everyone needs to do, but when it comes to what you want to do, you can do the most silly and risky things that you want, that's on your own and if you make a mistake and buy something that is terrible then it's your own mistake and you should own up to it and not make the same mistake again later on.
In my case i do make savings on 50% for long term hold with Bitcoin and other top altcoins and the other 50% would really be allocated for me to trade up in short term, and the profits that i would make
would be accumulated into my long term bag and this is why its not really that something that you would get stressed or bored out on doing nothing.
Its up to you on what you should gonna do since its your money after all and its none others business on how they would really be dealing with that.