Investing in Altcoin is really a good way, but the benefits and risks are always proportional, so the danger here is unusual, especially for Altcoin, the risk is multiplier, so it takes time to invest in Altcoin. A lot of research, try to screen out which real projects, so that your own risk will be smaller
Altcoins and bitcoin are both good investment, you need to choose the coin that you believe will make you profitable in the long run.
Just always think positive, you'll be rich if you believe and you will hold longer because crypto is the future.