I did a little breakdown on a Goodreads thread a while back to try and figure out where most of my orders were coming from. As I recall, the vast majority were from individual requests online. I sent a LOOOOOT of personalized (i.e. "Hey Katie, I saw your last video of you Irish step dancing and it was so cool! I hope I get to see you in person one of these days. Let me know the next time you have a show.
I'm sending you a message because I wrote a book, and I'm hoping you'll give it a chance and check it out." etc etc) messages to individual people, and that method brought in the most orders. And giving away stuff, too. Everyone likes a contest or giveaway.

I got a pretty good response for a few days from pitches, but then it trailed off and no one was responded to those anymore. I think everyone just started sending out so many pitches that people started ignoring them.

I constantly remember a piece of advice from Lindsey Buroker, a self-publishing author that I really respect and admire - she said you pretty much have to hand-sell your first 1000 copies. If you're an unknown author, you have to just go order by order, one person at a time. It's gonna be hard.

But if each of us can get you an order or five, that will help!