Some also are pumping or dumping because of manipulation.
To avoid such pumping and dumping coins you should think about investment in those coins which reduces your fear to loss money. I think solana is highly profitable these days so don't skip such coin as it will show greater success as compared to new coins.
There are large number of coins which are only live due to Bull season and favor from investors but they will not live longer and will die when condition become unfavorable. Ethereum among altcoins is the best choice after which Solana is going to have tremendous success so if one ignore these coins then he will avoid the way of increasing his money and will trap into scam projects.
This is very crucial when selecting coins to invest, though it depends on how you analyze and assess projects that you think have a good potentials, you just need to consider all the factors that might triggered the possibilities of gaining decent amount of profits, more on how you settle your research and how you position your trades.
Timing is important especially if you are a type of a trader who loves to ride along and got that big nerves to risk your money.