Why a quiet run tells you nothing
Deciding whether to wait for the bonus round means accepting that its timing is unknown. How often the Free Spins Feature comes is not known in advance, and no one can calculate it from earlier spins. The result of one session is random whatever the RTP, so a run of quiet spins says nothing about the next one.
Before staking, find out which RTP version Surge Casino runs for RetroVerse. That answer is shown only in the game rules, not in the list of versions, which describe what each version returns to players over a very large number of spins.
Deciding how large a bet to place means weighing the maximum win against what you can afford to lose. The maximum win on RetroVerse is a ceiling that is reached very rarely, and no one can plan a session around reaching it. Read the ceiling as the upper limit of one round, not a target.