Hello , To attract people to a Sport site , use a website theme related to sport . Favor a responsive theme optimized for SEO and mobile add stunning photos and videos to your content use services like Subscriber.com to retain visitors
You can create youtube videos yourself and have a link in the description linking back to your site. Have a look at this: https://trends.google.com/trends/explore?q=/m/01dys&geo=US I just put your keyword in the search box and that is the result I came up with. You might want to look at the "related topics" colum. It might give you ideas on different topics you can write about assuming you are going to write content.
First you need to optimize your website properly for Search Engines Social media channels such as Instagram, Facebook, Pinterest and Twitter are very good for generating sports traffic.