How can you make a fuzzy query?

I am using flutter,
my current Parse object is probably like this

I hope to find two objects, David and Dali, by querying D, but I see that there is no corresponding API in Flutter, what should I do?

You can find rest api doc in this site.
the example query curl code likes beblow:

# Finds barbecue sauces that start with "Big Daddy"
curl -X GET \
  -H "X-Parse-Application-Id: ${APPLICATION_ID}" \
  -H "X-Parse-REST-API-Key: ${REST_API_KEY}" \
  -G \
  --data-urlencode 'where={"name":{"$regex":"^Big Daddy"}}' \