Opera is very old times browser.
Opera according google crome is best application for pc & mobile types. Opera team do not developed icons , extensions or themes is so old type.
Mostly user, s using the crome application beacuse crome is time to time updates provided but opera team not provide to pro version themes and some things is very old so currently i, m using to google crome is more than faster & extensions is great.I think opera mini is old browser so I hope next time team increased many features.