Promoting your story is a long process that takes manners and dedication.
It takes time to build up a group that regularly read, comment and vote for your stories.
Word reading requests in a polite, friendly way.
You need to think about who and where you send these reading requests.
Busy accounts won't have time and if you do it through their work it can appear rude.
For example, if someone states they don't accept reading requests, move on.
Ask followers and Wattpad friends to check out your work.
Be polite, considerate and complimentary. It may take more time to write the request but it shows respect.
Engage with the Wattpad community and traffic to your work is bound to increase.