Just a reminder as to the PURPOSE of Roulette: It is to funnel players into the instances where they are needed.

Why was Leveling Roulette all Sastasha, all the time when NIN was first released? Because there were many players running Sastasha. There was a need. Eventually, the flood passed, and so, too, did the overabundance of Sastasha instances in Roulette. Right now, there is a need for ARF, as many players are running it for Esoterics. This, too, will eventually pass. Just be patient and ride it out.

Roulette is a contract. You are being paid in Tomestones in exchange for helping out where you are needed. There's no promise that you'll get an instance that you'll enjoy, and there shouldn't be.