Altcoins can be profitable, but they come with higher risk compared to established cryptocurrencies. Research thoroughly before investing. This is not a financial advice.
It could be a good investment, but make sure you know that everyday is not your day especially if you want to make a living with it. You will have some bad days because of bad news from the market and make sure to check everything before you invest on certain assets especially if you are looking to invest on low rated altcoins on coinmarketcap to avoid unnecessary losses. Research is your key here.