Use Pro Mode

[Iamtejasvisingh]

Use Pro Mode For Better Professional Results...You Can also turn the RAW Mode 

[afnazjaslin]

how can turn on RAW mode on galaxyA9?

[Iamtejasvisingh]

I don't think galaxy a9 offers This feature

[afnazjaslin]

which app are you using for editing

[Iamtejasvisingh]

snapseed or vsco

[tgko]

use lightroom mobile as it's better than Snapseed in CGing and non distructive editing