I am now confused, I want to ask you all, which one is better to buy altcoins or buy bitcoin, which can earn a lot, please give your answer
Just do your own research about the coins you want to buy, either it is bitcoin or altcoins.
From my personal opinion, the existing coins like btc, eth, xrp are better and safer to buy because they already have value in the market.
The riskier thing is when you want to buy a new altcoins, you must do tons of research about the project.