What’s the best way about getting a breast lift?
I was wondering if there’s such thing as getting a breast lift and using fats from another part of your body to fill it up. you know, instead of using implants, I would use fats or muscle from my body. If that possible?

Ask Santa for a new pair!
possibly but adding more fat to your breasts wont make them stand straighter up, it would just add more weight to your breasts, causing them to sag more
There have been very recent developments in using fat from other parts of the body to enhance bust size, which can effectively lift breasts in some patients. You would need a consultation with a surgeon familiar with this procedure, at this time, you would most likely only find an experienced surgeon in a city center.