How do I promote my fitness apparel to targeted audience on Instagram?

I launched my product line just last week. I am selling fitness apparel in USA through online store only.

I am looking to promote my product on Instagram to my targeted audience. I did read many things on this forum and decided to buy a bot to automate my tasks.I will buy Jarvee or GMT2. Which one is better ?
I rarely used social media so I have very little idea about marketing on Instagram.

Can anyone guide me on how to promote my products to targeted audience very effectively for best…

How do I promote my fitness apparel to targeted audience on Instagram?