I understand! I've also encountered problems like this: a site seems great at first, but then disappointments set in—either with the RTP or the customer support. I've been playing at
chicken road uk lately, and I can say that they offer stable and fair RTPs, and the customer support is always top-notch.
I can recommend them, especially if you like trying new slots. They frequently release new games, and the returns are quite good. I've already won a couple of times on new games, which is more than I can say about other platforms, where the RTP often falls short of expectations.
Plus, their support team always responds quickly and helps with any questions. This is a big plus, especially if something is wrong with a withdrawal or other issues arise.