How to Build Traffic to a New Website or Startup?
Work on preparing posts on trending topics. If you have a brand new website, you can't beat other people's evergreen content. For new websites, it is the best opportunity to rank fast because the topic is not saturated. Google has an algorithm about content that's fresh (trending) that "...impacts roughly 35 percent of searches and better determines when to give you more up-to-date, relevant results for these varying degrees of freshness." Fresh content doesn't mean new but trending and relevant to the search query.
Don't change your content to make it fresh. You can update it if it makes sense (correcting facts, adopting a modern approach), but changing it for the sake of rankings, won't give it a boost, rather the opposite. Make it relevant or build more content that's relevant to what people seek today. Trending content is a reliable traffic source to make an entrance, but you will also need evergreen content to keep the visitors coming back.