plenty of people make money but like any business they are not the majority. if your a solo dev i wouldnt bank on your game making enough to replace regular work. also considering you yourself identified as new to this your not likely to make anything. you also need to consider the business aspects when trying to make money, advertising and all that takes up front capital. your also competing with more apps then ever before. i dont remember the number but i think it was something like thousands of new games/apps come out weekly or monthly, so theres a lot of competition.