Good prospects are hidden, and generic pitches get deleted.
Plenty of barbershops and salons rank on Google Maps but run websites that quietly cost them bookings. The site is slow on a phone, there's no way to book online, or the phone number is buried.
Fixing that is straightforward. Finding these businesses is the slow, manual part. You search a city, open every site, judge it, hunt for an email address and write a message. The message that finally goes out sounds like every other agency pitch the owner has already ignored.
That gave me two problems to solve. The first was finding the right businesses at a volume one person can't reach by hand. The second was earning a reply from an owner who has never heard of the sender.