Sure it COULD be rigged, like roulette could be rigged.

Coinflip. could have different polarity magnets in the base and they switch off after the coin has started to settle - even if they dont have magnets they for sure have a way to tell which way up it landed - same with pachinko.

Cash hunt, could serve different values in different spots according to whos clicked those spots more or less (or even serve different value overlays to different people)

Pachinko , nudging magnets to encourage the ball in different directions at different pegs.(easy to chuck a lump of steel in there or something).. Plus they chose the values and ball start location.

crazy time is just a big video feed and they could have it land where they like for all three arrows. The wheel iz big enough that creating low settings at the right distances apart is easy

And of course the wheel could be specially braked or weighted.

But here's the thing... Because people can bet on all outcomes no one will ever not get some money back.

If it was so obviously rigged... No one would play it, and it frequently gives decent prizes so, even it the outcomes are fixed... Doesnt mean it doesnt have a set RTP just like slots. For sure the house has an edge, because in this game, did you spot the house edge yet? (Besides the obvious questions of average and varying payback for each tile)

Crucially its a super fun game, that gives regular pays even if it is 'rigged'.