If you don’t have a thermomix, the links below can still be handy recipes - just use your own tools.
This is the australian site for collecting Thermomix recipes. I did a few searches and found 5,428 RESULTS FOR “LOW CARB”. Some are for meals, some for sides, some for deserts.
I also did a search for LCHF and found 77 recipes:
6 recipes that specify keto:
Keto Chia “Rice” Pudding
LCHF CHOCOLATE WALNUT KETO FUDGE
LCHF Keto Coconut lemon vanilla custard
Pecan Coconut Butter (Keto Diet)
Flax Seed Focaccia (Keto Diet)
Keto Cheese Sauce - LCHF