I can answer this two different ways. I have 3 coins, which are btc/eth/bnb that are covering almost all of my investment, I do not think that others matter and other coins/tokens could go to zero and I wouldn't really care, it wouldn't really destroy my portfolio and I would be fine, if they go up that would be great of course. However the second answer is a bit more tricky, I have 27 total, 24 coins that I invested anything between literally chump change like 100 satoshi or so, to ones that I have about 100 bucks, but that's about it, nothing more, in fact the highest I have is 88 dollars, and there are all those coins in between as well, I do not care about them because I know that they will not make me too much money, I invest into coins early and let them stay there for months and months instead of just sell them right away, which makes it harder to profit because most new ones only profit in the first month.