Probably the closest to what you’re looking for is at Le Tour at the top of the valley. Search STW and see my post history.
There’s an OK loop (Pettit Balcon Nord/Petit Balcon Sud) that starts from town (look for the parapentte landing field) and goes aroud the valley floor. Once is enough tho.
Chx isn’t really XC territory, more for the body armour brigade really. It’s pinned in a deep valley with huge rock walls each side, that pretty much defines what you can do there. And biking’s not a high priority for the Marie as Chx has masses of summer tourism trade anyway from coaches and so on.
For maximum biking bang for your buck go to Morzine or Verbier, both about an hour and a bit away by car.
For hiking and views, it’s world class. And if you climb, you’re in sport climbing paradise.