Last spin's bonus says nothing about the next
Every spin deals a fresh set of 30 symbols onto the 6x5 grid, and no spin remembers the one before it. How often the bonus round comes is not known in advance. The result of one session is random, whatever the RTP of 96.50% might suggest, so a session can end far above or far below the average return.
Symbols pay wherever they land on the screen, so a cluster anywhere on the 6x5 grid can count. Which RTP version you play is shown only in the game rules. Open those rules before your first spin, and check that the figure matches the version you are in.
Each tumble removes the winning symbols, lets the rest fall, and fills the gaps with new ones until no wins remain. The maximum win of Sweet Rush Bonanza is a ceiling reached very rarely, even though it is set at x5,000 the bet. Treat it as the top of the scale, not a figure to expect from any session.