@luisapinto welcome to Steemit! I have found the best way to get people to follow you is to really engage with them by leaving thoughtful comments. Here’s a post of mine about that exact topic that I wrote when I was still quite new, but the approach has worked very well for me.
https://steemit.com/steemit/@cstrimel/how-to-win-friends-and-followers-with-meaningful-comments