Before the first reel stops, nothing is fixed
Each spin drops symbols onto the 5x3 grid, and a bonus round starts only when the right symbols appear together. Nobody can say in advance how often that happens, because every spin is random. Whatever RTP the game runs at, the result of one session is random too, so a quiet stretch tells you nothing about what comes next.
Each win on the reels counts toward the payback that the RTP describes over a long run. Which RTP version our lobby runs is shown only in the game rules, which is where to read it.
Top prizes need the right symbols to line up from the leftmost reel onward, and the maximum win sets the highest payout the game can give. That ceiling is reached very rarely, so treat it as a limit on the prize, not a result you can plan around.