Hello, i have bought a website but i want to add 2-3 niches. Dont whant the same with my country blogs. They have: News Lifestyle Sport Cars Fun Tech Magazine Curiosity Economy Health And my website has Lifestyle,Money,Tech,Communication,Productivity and Work Definetly i dont want news. What do you suggest me ?
What your question has to do with WordPress? Also, I don't understand what you are trying to achieve. Do you mean categories?
You haven't mentioned what you actually know about and can write with authority. No point adding a category if you're going to degrade the rest of your site with duplicate content, spun content or just plain crappy content because you don't know enough to write better.
Agreed with @sarahk Share some topics you are knowledgeable about. If you think a specific niche will help you earn more, get more traffic, etc. that's just a myth. Write about what you are expert at and not about what is more profitable. It will be really beneficial if you could tell what you are good at, I can suggest you a niche.