I never played this kind of game but if there is no probably fair transparency of such or anything similar to prove its being fair, the chance of it for being rigged is high. I don't say it is completely rigged but it could be somehow. Let's hear some experience of others too on this kind of game.
It is live game show, there is no fairness tools that can be used to verify game results. Players are supposed to believe it is not rigged and keep playing untill they won reward on wheel. Top multipliers on wheel don't hit often the wheel section, let's don't forget the numbers are more than bonus sections on wheel surface. My suggestion is to contact Evolution gaming provider and ask for proof of fairness, there are websites that can be used to check previous game results, max multipliers or track live game btw: Tracksino.com