I hope you got through the reviews of FSH, and generally, if people are complaining, it’s about a though level of difficulty and punishments regarding spending more and more money, when trying to win the game using special abilities that are getting more and more expensive. My brother tried the game on PC and, though he likes the game and how it feels, he admits, that he spend all his earned money in some level and couldn’t get any further because of he can’t afford to pay for abilities that could allow him to win a difficult level. I was having the same problem on mobile and many levels needed to be replayed to have a great cards that just “fits”. The problem I see, is that the economy is not established. Maybe you are rewarded a bit, but after using some abilities you can’t afford to buy next, so it’s making you annoyed, because it doesn’t depend on your skill, but rather on your luck 
Also, I read a nice text on gamasutra last time, it could be useful (as I have the same thoughts about a trailer ;)) : https://www.gamasutra.com/blogs/ChrisZukowski/20190906/350248/How_Steam_users_see_your_game.php