Accept that every session ends unpredictably
Choosing a bet size does not change when the free spins arrive. Free spins start after three or more Scatter symbols land anywhere on the grid, and no page, table or past session can say when that will happen next. The result of one session is random, whatever the RTP. Many spins can pass without a bonus round, and a short session can end with one.
Deciding which version to play starts in the game rules, because that is the only place Pub Casino shows which RTP version runs for Fruit Party. Figures quoted for a related title or on another site do not settle the question, because versions of the same game can carry different RTP figures.
Judging Fruit Party by its top prize means reading the ceiling correctly. The maximum win is 5,000 times the bet, and it is a ceiling reached very rarely. Treat it as the outer limit of what the game can pay, not as a result any session is built to reach.