There are so many ways to promote your website that internet marketing is considered to be one of the most dynamic fields of expertise nowadays. You can master paid traffic strategies (on tons of platforms from Google AdWords to Facebook and Instagram ads), you can run your guerilla marketing campaigns, you can build backlinks for your website and harvest all the free Google organic traffic there is. Obviously there are many more website promotion methods, these are just the basics.
The first thing you need to remember though is that your website must be absolutely ready for visitors. What that means is the content you publsih on your side must be high quality. If the content is not good all your hard earned visitors will bounce on the second sentence.
Second - make sure the site looks professional. We have seen so many website that had awful bounce rate only because they did not look professional and credible enough. Hire a web designer and do not save on this because a professional-looking website does not only interest visitors but it also attracts backlinks.
No one will be willing to link to a website that looks bad, on the other hand, a great-looking website attractslinks because people think it's an authority in the field. There are even link building methods that involve making a website that looks like a news portal to attract industry expert links.
No matter whether you choose to go down the paid traffic or the organic traffic way, remember that your site must look and read well. Do not waste clicks!