Firefox browser for Android is my favorite, but it still has many shortcomings, like you cannot use private DNS in it, there is no option of bookmark import export, you cannot move bookmarks up and down and create a group of tabs and you cannot use themes, and there is no Hindi language in the inbuilt translate, and the speed of the browser is also low and not smooth, I request you to work on whatever I have told you and implement it in the browser, thanks