My tummy is left with a lot of loose skin and right side is bigger as well as a puffy pubic area. Advice? (photos)

I had arm lift and TT 5/16 and wondering why my PS left me with a Y incision at my armpit and didn't make it straight into my armpit? It looks like if he would've made a single line I would have less loose skin at the top of my arm. Is there a reason for the Y? My tummy is left with alot of loose skin and right side is bigger as well as a puffy pubic area. I have addressed my PS with TT but he doesn't seem concerned. Not sure if this is my end result or if I need to be patient but I'm not too happy.