From my humble experience
I see currencies that have a real project and are used in our lives, I buy them
Any meme currency, follow the news and buy when it launches and sell at the earliest opportunity because it has no future, it is just currencies that follow rumors and news, if you follow the news, trade it
Any currency with a high market volume has more security
If there is any mistake, correct me
Currently, I have my eye on $XRP for the long term
And $PEPE for the short term