Instead of betting on the unhit numbers after 37 spins, try betting the same number of numbers picked randomly. You'll find that the results are the same. Why? because **outcomes are independent and past spins don't influence future spins**.

Here're the 3 sessions where I rolled 37spins for history data then make a 37units(cover zero) even chance bet for every spin for the next 18spins to spin55. The result for each spin is either breakeven=-1, win=+35, loss=-37

Summary

session1 9w 5L 4BE 18bets

session2 6w 4L 8BE 18bets

session3 7w 4L 7BE 18bets

** 41% 24% 35%****54bets, 41%win, 24%loss and 35% breakeven(-1)**Small sample size bets based on historical data.

I provide this sample proof to disagree what you wrote.