Sitting down at the reels, before the first spin
You decide how long to play, but you cannot decide when the bonus round arrives. How often it comes is not known in advance, and no review can predict it. The result of one session is random, whatever the RTP. A long run of dead spins says nothing about the next spin, so each spin starts fresh.
You check the RTP before you bet, so look for it in the game rules. Which RTP version a game runs is shown only there, so read those rules in full before you start playing each time.
You see the maximum win on the game page and may wonder how close a session can come to it. That figure is a ceiling, and it is reached very rarely, so treat it as the top of the scale rather than a target. Plan each session around the bet you can afford to lose.