Of course they are risky. We know the traumas on Altcoins in the past, FTX, LUNA, these have created big crises in the crypto market. Coins such as BNB, ETH, or the coins you mentioned, which we know as solid altcoins, are going through the recovery process, of course, depending on bitcoin. When the market trend reoccurs, I can say that I am hopeful for alt coins, but even solid coins are just as risky.
I agree with you, therefore if we want to invest to avoid big risks, then we can just invest in Bitcoin, but if you really want to invest in cryptocurrency without being afraid of big risks, then you can invest in altcoin, because investing in altcoin can give us a bigger profits than investing in Bitcoin, but of course the risk of investing in altcoin is bigger than investing in Bitcoin, but my suggestion it's better for you to invest in the top 10 altcoin on coinmarketcap (safer than other altcoin).
there are no better place for our money to be invested but Bitcoin though there are really
a riskier way in altcoin but faster to achieve .if Bitcoin took years sometimes to reach ATH altcoin sometimes .
and for me personally? i hate investing in new project nowadays since the ICO days when multiple scam project
that successfully taken peoples money , so why do i care for new project when there are already lots of existing
project that making investors rich.