Search google Locations within a Location

Hey, let’s say I have a place listed in Mumbai (which is a city in the state of Maharashtra), now when a user searches for location and types Maharashtra, I want all the places within Maharashtra(like, Mumbai) to be also shown, currently, I have to type Mumbai to show Mumbai places.
any help would be appreciated. Thanks in advance.

Did you tried with Google place api with near by search?

Screenshot 2021-10-01 180316
When I go in the filters for search of location I get only these options