Any investment must be done carefully, especially in any cryptocurrency can occur, up or down is a natural thing, so we must be able to accept what risks are in cryptocurrency, do not be pessimistic if what we get now is not in line with our expectations
Always find ways to have alternative plans, just in case things didn't work out properly, being careful and do your homework researching and studying sometimes not enough to succeed from this venue of investment, there's still chances that we will failed and be victimized by scammers or failed developers.
therefore if you want to invest it is better to choose the top 20 coins in the crypto market because it will never cheat or become a coin scam. because now many new coins are scam and become garbage in the market