I made a sale. Now what?

Hello, apologies for the ignorant title. So I have made 3 organic sales in total of my handmade jewelry. I wanted to ask if there is any way I can find the keywords where my sales came from to create a campaign?

I tried Amazon advertising before and it went terribly. Being a new store doesn’t help,

I wanted to ask if anyone has any strategies to take advantage of their sales. My jewelry are considered expensive 160USD+.