Earlier there is an option available saying that "Go to classic search results page", seems now it has been removed.
Now main question is, how I can add refiners on the modern search page? This feature is still under development? I am able to see only two refiners "File Type", "Last modified time". It is becoming very hard to convince customers on this. By seeing all these things, I am thinking I will never recommend modern experience for my customers. Everything is half-cooked. Search is big area where client will be interested in. At least is there any road map item so that i can try to convince m client??