Variable Product & Attribute swatch & Variations & sku

Variable Product & Attribute swatch & Variations & SKU
Question 1:
Hello: I want to ask about the Variable Product when I edit the Product Type directly in Bulky
1: I first select Variable Product in Product Type
2: Then go to Attributes to set “Color and Size”

I encountered a problem. When I click “Save” and “Refresh the page” my Product Type will change to “Simple Product” instead of the Variable Product I originally edited.

I still need to go back to “Products” and re-select: (Photo attached)
1: Product data: Variable Product
2: Variation
3:Generate variations
Only then can I change my product to Variable Product status.

I would like to ask how I can directly “Add product → and change the product to Variable Product” in bulky without going back to “Product settings and click Generate variations”.

Question 2:
I would like to ask if I can move the “Attribute swatch” into bulky “so that I can easily set the “color image, color”.

Question 3:
I would like to ask if I can move the Description in “Variations” into bulky “so that I can easily set text descriptions for individual categories”

Question 4:
My sku is automatically generated, but it seems that the sku is not displayed after I set the product in bulky. How should I deal with this?