Preheat oven to 350 F and grease or line three 8-inch pans.
To make cake: In bowl, mix almond flour, pastry flour, cocoa powder, baking powder, baking soda, salt and monk fruit-allulose blend. In separate bowl, mix eggs, Greek yogurt, avocado oil, buttermilk, distilled vinegar, vanilla extract and red food coloring, if desired. Combine dry and wet ingredients until smooth. Divide evenly into pans and bake 18-22 minutes. Cool completely.
To make whipped cream: Whip cream cheese and monk sugar until smooth. Add cream gradually and whip to medium-stiff peaks. Chill.
To make berry drizzle: Warm berry jam with water and lemon juice, if desired, until pourable; cool slightly.
To assemble cake: Layer cake, whipped cream, jam and berries; repeat for three layers. Top with berries and drizzle.
Chill 30-60 minutes before slicing.