This question has been asked very often. The answer is: It is difficult. There are multple new games released on itch every day. A lot of them have good or decent quality, but most of them will attract no attention at all, just because there are so many. So either you have to stand out a lot, or get very lucky.
What I recommend: Trade feedback with others and constantly improve your game. Maybe you can create a really good game in that way, or you learn from your mistakes.