Issue With Woocommerce Attribute Option

Hi all, i am having an issue with Woocommerce.

I want to to have different sizes in my product, while using Simple product.

But when i add attributes and check mark {Visible on the product page}
its not showing on my product page.

When i use variable products its fine, but then the price is not showing. and when i use Simple products, then price is showing but variations are not. Please tell me what should i do