High fat = weight loss.
I have full fat (10%) Greek yogurt with frozen berries and ground flaxseed for breakfast - as part of 800 cals a day max.
I do something very similar (with the food, I eat way more calories!). I eat a diet that feels satisfying and try to listen to how I feel - eg stopping eating when I’m full regardless of how much I actually ate. For me, satisfying is full fat and protein. I still have carbs but how I have them varies.
I usually have a similar breakfast - full fat yoghurt, berries, and some form of cereal-type item on top (currently having Grape Nuts as I like the malty taste and they have no added sugar, these are obviously normal carbs as they’re mainly wheat).
Lunch will be various veg - carrots, beetroots, radish etc, usually raw and grated as it’s easy to make and easy to eat - with full fat hummus and some other protein like mackerel or chicken.
Dinner is usually oily fish/meat and veg (like steak and salad, salmon and veg), depends on how I’m feeling but the majority rule is going for a carb light dinner, I have pasta for dinner maybe once a week and another similar carb (like rice or noodles) about once a week too.
I don’t feel hungry, or deprived, I don’t snack, and I lose weight gradually (average at least 1 pound a week).