Dude, you don’t need more Instagram followers. Having over a thousand followers doesn’t make you any more cool or interesting. If you really want to get others to like you, then work on building your personality in real life. Be virtuous, help others out, and be kind, and people will notice you as being a good person. And even if they don’t, then so what? Just be there to lend a hand to other people popularity isn’t something to aspire to be.
But if you want to disregard my advice completely, there are plenty of apps that can give you followers relatively quickly.