how pool mining works?
Mining is a game of luck, only one miner ends up mining a block but they all compete. Its like buying a lotto ticket. If one person buys a lotto ticket (i.e. mining by themselves), they will get to keep all the winnings to themselves if they win, but there chances are very slim at winning. On the other hand, if 20 people all buy lotto tickets together and agree to share the winnings between all 20 if any of the people wins, they have 20x higher chance of winning together, but get only a 20th of what they would have got if they were alone. That is what is meant by a more consistent income, you get a lot less per block but its more likely that you will at least get something, not nothing.