You are right, sometimes it is quite difficult to get FS. like I felt in the mahjong game I played last night where I chose to spin 100 rounds but there was not a single chance to get FS. sometimes it is so difficult, so I have to think of many new strategies to get the chance to get FS.
Try ShowDown, it is a game with a large multiplication that I play. Apart from that for PG Soft services I choose two games that are my favorites. But if in pragmatic play I have many favorite games, one of which is Gems Bonanza. That game is an earlier choice for me to play if I choose a service from pragmatic play. Yesterday I lost in Mahjong and might look for another strategy to seek luck in the next few days

No doubt that is difficult to get FS, I feel that too. I play slot game from many providers but not many times I get FS. I realize that depends on luck but I am okay with that.
I rarely play slot game from pragmatic play because it is difficult to win even if I buy Bonus Buy feature. If I win, the money will not reach the money I used to buy the bonus. But speaking about Pragmatic Play, my friends really like playing Gates of Olympus. They really chase the win from that slot although they know they are hard to win.