You can try to buy followers, but it is not the only way to increase your following on IG. There are other tactics you can use like using hashtags, commenting on others’ posts, and more. The first step to gaining more viewers is engaging with your current ones. Post photos that are relevant to your audience and update them frequently. Follow the people who are following you. Post high-quality photos. Interact with other accounts. This part is especially important for businesses that want to gain more viewers. You can capitalize off of someone else’s post by liking and commenting on it. Use hashtags. I think it's the most common methods to get more followers on IG.
It's better not use too many hashtags. Filling your post with too many hashtags can be off-putting to other users. It will make you seem desperate for attention! Try to keep it to ten, and use hashtags that are actually relevant to your post.