Not sure what games you’ve been playing, but I can recommend trying out Sweet Bonanza and Sugar Rush, both are from Pragmatic Play. I think that provider really makes fun and exciting slot games.
In terms of winning chances, it’s pretty much the same across the board. Most of them have an RTP around 96–97%. I’m not winning consistently either, and to be honest, I probably still lose more than I win overall. But those games I mentioned, I've had some decent wins on them before, so they’re worth a shot.