some help of how to use the api of meta properly and grow in followers

Hi. It will be nice to have your views. I ll appreciate advices. I explain my situation

I started to use Api graph of meta to make automatic posts in my fb and ig accounts associated with my business (it is an ecommerce). It is already two weeks.

I just do normal reels of products with descriptions and put some background music (I think the reels are normal).

I am doing this already two weeks. 8-10 reels per day.

Results=2 followers in Instagram.

Results=2-3 follower in fb.

What I am doing wrong?

Help me please.

Before trying automatic posts, in fb I had 1.1K followers (most of them from ads) and 27 in ig.

Thanks in advance