Hi. I’ve stayed in Canazei a couple of times. The nearby bike park is pretty small but there’s riding for a couple of days. I’d recommend the Sella Ronda though plenty on here probably wont. It does have stretches of double track, but is incredibly scenic and you can mix in extra sections of singletrack or repeat lift ascents if you have the time (dont miss the last lift, wherever you plan to end up).
This has some examples of using the anti clockwise lifts to get some extra descending: https://www.strava.com/activities/2604696135
We camped in Canazei