There are a lot of good altcoins that is more safe to invest right now, example is bnb,XRP,UNI,etc.,those altcoin is already trusted and safe to invest
I agree with BNB, UNI but XRP I would say no. That altcoin is centralized and has bad history with SEC. You will not want to wake up and see it halves because of new law suits from SEC. I don't consider XRP is a safe altcoin.
Else, Ripple is very hard to rise. It usually accumulates very long time and in accumulation, you only can hold it or do scalping trade.
but i think this coins will always depend on bitcoin, we need to be more careful because if bitcoin will drop in May some altcoin will surely down and the market will be red however this was an speculation because no one can predict on what will be the next price of bitcoin.
Sell in May and go away, is it what you mean?
Cryptocurrency is different than other markets. You will see May 2019 has a big rise of market, not down.