Bought followers will always be fake followers which means they're NOT going to be active.
Real followers are when they give you unlimited shoutouts until you reach that amount but that tend to be around $40 per 1k, so if you buy them less than that it's fake.
i like to grow it anyway myself but i am wondering if more follow back if you have a t least 1k or so. i am now at 100 which looks not really popular to follow back.
Yeap. Beings bots 'they' will wright something like 'cool', 'great', 'nice pic' etc. But never more.I think "real" followers means that their profile looks real. With a couple posts, profile pic and bio. Don't think they will engage with your content tho.