After trying different browsers on android I found Privacy Browser to be what I need. It have encrypted backups,Domain settings,jsless by default,Deleting all site data and Most usable UI. Only issue is It is based on webview and I am using system default webview as my device is nonrooted so how secure is to go this way?
I am saying Privacy browser not private browser
Ah I see. My bad! That looks much more reasonable, some cool features.