I started off just like you lol. I was writing and no one was paying attention, but then they started to once i got my book out there.
1. You have to make sure your cover is attractive. You can always go to the website and click community, then clubs, then multimedia designs. There are many graphic designers on wattpad willing to help.
2. You have to make friends. Theres another club called the cafe where you can just talk with other people and get noticed.
3. Theres another club called improve your writing. You can always find people there willing to help, especially if you need critiques or editing.
4. When people read, vote, or comment make sure you thank them. It keeps them coming back and theyll tell friends about you.
5. There are also genre clubs where you can advertise your works.
I didnt get this far over night lol. It takes time.