I want a breast augmentation without a lift
From your photos it appears you need a lift. Augmentation alone will likely leave you with a shape that you will find unacceptable. Augmentation adds volume to the breasts but it does not raise the position of the nipple.
Your nipples are pointing downward and will point further with implants. The technique I recommend is a lift using The Bellesoma Method. This will reshape your breast tissue creating upper pole fullness without implants, elevate them higher on the chest wall and more medial to increase your cleavage. Vertical scars are avoided, nipple sensation (in 95%) and the ability to breast feed are maintained.Best Wishes,Gary Horndeski, M.D.