Retro Sweets gives no preview of its next win
Set your bet before the first spin, knowing that the bonus round has no set schedule. How often it comes is not known in advance. The result of one session is random whatever the RTP, so a higher RTP does not promise a win in any one session.
Open the game rules before your first bet, because the RTP version this site runs is shown only there. Series titles can carry different RTP versions, so check which one is listed before you compare returns. A version with a higher figure changes the long-run return, not the result of a single spin.
Plan around your bet, not the top prize, because the maximum win of Retro Sweets is a ceiling reached very rarely. It is a limit on the payout, not a target for any session. Treat it as the outer edge of the game, not something a spin is due to produce.