I'm delighted to read that you're stepping up your game and becoming more confident in the marketing and sales realm. Double down on what works. If Insta gets you results, excellent. Are you setting up the ads natively inside Insta, or do you use Facebook/Meta Business Suite - Ads Manager? The latter has very granular targeting options you might want to look into, if you're not using it already.

The more experience you gain and the more comfortable you become with testing, the better your game gets.