Random results and the x5,000 ceiling
Deciding to spin Big Bass Halloween 3 means accepting that the bonus round may take a long time to appear. How often it comes is not known in advance, and the result of one session is random, whatever the RTP. A quiet stretch does not make a bonus due, and an early bonus does not repeat on schedule, so earlier spins give no pattern to follow.
Deciding which bet suits you starts with the game rules, since the RTP version running is shown only there and nowhere on the reels. The RTP table on this page translates that figure into money at A$100 staked. Read the rules panel before the first spin, so the numbers match what you see in the lobby.
Deciding to chase the top prize means planning around a ceiling that is reached very rarely. The maximum win of Big Bass Halloween 3 is x5,000 of the total bet, so a larger bet raises the money at stake, not the multiple. Treat that figure as the outer edge of the game, not a target for any session.