Bro, first of all you need great content, preferably interesting and at least a little informative. You need a large audience who will be interested in your content. By the way, to get long and tedious subscribers, I can advise you: https://famoid.com/buy-instagram-followers/ . Here, a really cool site, live subscribers, and the site itself picks up the audience for you. I can also advise you not to sell advertising in the initial stages, start selling it with a hundred thousand subscribers. And sell quality advertising, not casinos. I wish you luck!