I had bad run on slot games lately especially with Fruit Party 2 as I did not get any FS after more than 5 hundred spins, I think it is my worst experience with Pragmatic slot.
I think I should stop playing slot games for a while and back to my other favorite game Crazy Ball aka Plinko.
I think you pick the wrong slots to play the "long game." That's the "problem" for high volatility slots because the longer it takes to bounce back (big win). You can down a lot before getting big wins. Thus, you need massive budget like what roycilik did.
Try medium volatility one if you play casually since it successfully brought my sanity back.