Promote Instagram posts?

I recently started streaming on Twitch and want to increase my reach. Now I've thought about promoting a post on my Instagram account (the one that goes with the Twitch account). But I wonder if it's worth it to be promoted for 15 euro for 3 days. The estimated range is 3,200-10,000. I currently only have 16 followers on the account. I wanted to ask if anyone already has experience with it and can recommend or advise against it.

It depends on I do that using insta Ads… Of course, it depends on the topic, but I wouldn't rate that too highly… You just have to give it time. What you want very, very many want and it is no longer that easy.