There are people who use regular dating apps for sugar, but as you just discovered, if you are overt about it, you will be banned off the platform. What you have to do is set your age range to sugar range, and then make oblique references. They might be very cringey, "Looking for a relationship that's sweet as sugar!", or maybe you'll figure out a better way to do it. A 23 year old who gets favorited by a 50 year old, will not even bother checking his profile unless she's open to sugar, and the sugar reference will give her the green light.
That said, I tried this on Tinder for a while and was not successful in finding an SB there. But this is the approach that doesn't get you banned, and that the people who are successful as SDs there have done.