Follow and interact (like, comment) with other similar accounts.
Obviously no idea what your business is, but as an example if it is a home decor one, follow others, potential future customers who look to have an interest in your feed.
When you do comment, make sure it's a proper comment and not just "nice feed!" or "good photo!" as that screams spam grin
Post regular content (few times a week, say 3 or 4)
Followers will start to build up naturally.