Can any round foretell the next trigger?
Choosing a bet size does not tell you when the bonus round will arrive, because its frequency is not known in advance. The result of one session is random whatever the RTP, so a short run can end well above or well below the long-run return. Read the RTP as a long-run figure, not a promise for one session.
Checking which RTP version is live means opening the game rules, because that is the only place it is shown. Read it before you start, since the two RTP values describe different versions of this game and only the rules say which one you are playing.
Weighing the top prize means reading it as a ceiling, not an average. The maximum win is a multiple of the bet, so it grows with the stake, yet the ceiling is reached very rarely and no session can be planned around it.