Altcoins are known for any kind of accusations you can mention but where there is bad eggs, sometimes you can also see some good eggs in there. Some altcoins for years are known for prioritizing their community, the team does as exactly as they say and they are decentralized to some degree even though they can't be like Bitcoin.
If you do your research properly, there are some altcoins that are worth investing. Coins like BNB, hype(this one don't play with the community) and many of them but there is nothing like best altcoins. Make sure you diversify your portfolio as possible and more of your investment should be on Bitcoin just for safety precautions.
It will interest me to tell you that any altcoins seen doing well is a native token of an exchange, bnb, and others whose price went up drastically and the percentages of theit volatility is small . Any other coins that is not a native token of a Blockchain or exchange will definitely fluctuate with higher range and possibility of hitting zero