The problem of mining coins with low difficulty is that these are often new coins that are not even traded on the exchange, or there is a little-known on the exchange, small trading volumes and a low price.
What makes you doubt the profitability of mining.
Not all coins make a profit this way, but you can earn some money quite well.
But we still have some new coins with great potentials that are worth mining. No one knows the coin which is going to be the next Bitcoin. After all, the difficulty in mining them isnt that much so I don't think it will be painful if you are not able to earn much from mining them