Past rounds say nothing about the next one
Choosing to spin Big Bass Splash 1000 means accepting that nobody can tell in advance how often free spins will arrive. The result of one session is random, whichever RTP version is live. A long run settles toward the return the game is built for, but a short session can end far above or far below it.
Deciding which version to play starts with the game rules. The RTP version a lobby runs is shown only there, so check that screen before your first spin. The table on this page lists each version and its return in money, and the rules screen tells you which one your session uses.
Going for the top prize is a choice many make, so know its scale first. The maximum win of Big Bass Splash 1000 is a ceiling, and it is reached very rarely. Hitting it is not a planned outcome, and the win listed in the maximum win table is the most a single bet can pay out, not an average.