Hidden outcomes behind the RTP figure
Decide how much you can afford to lose before the first spin, because the bonus round is not predictable. How often it comes is not known in advance. The result of one session is random, whatever the RTP. The RTP describes the average return across a very large number of spins, not the outcome of your evening.
Check the game rules before you decide which RTP version to play. Bizzo Casino shows which RTP version it runs only in the game rules, so that is the place to look. Do not take a figure from another site as the answer for this game.
Treat the maximum win as a ceiling, not a target. Big Bass Halloween 2 pays up to a fixed multiple of the bet, and reaching that ceiling is very rare. No one can predict whether a session gets near it, so the ceiling says nothing about your next spin.