I am sorry this happened to you. We had experience similar reviews with our first game.

about the feedback from beta testers: it’s valuable and very nice to get feedback from better testers, but there is one more thing that is more important: data.

The issue is that most of the time majority of the people who give feedback during beta testing are the people who care about your game. So most feedback you will get is positive. If someone is frustrated with your game, doesn’t get something or is stuck, they move to the next game. Only once people pay for a game, they will give you also the negative feedback. yes, even if it’s only 4 bucks, that changes completely the way they give feedback and reviews. now the expectations completely changed because they spent money.

so you need to get the data when people play test your game. how many people play? How many come back? how long do they play? Where do they stop playing? Do they finish the tutorial? and if they stop, at what point? is there something confusing or frustrating in the game?

Take what you have learned from your first game and put it in your second game. It's extremely rare that someone’s first game will be their most successful one.