Work more on your content, build index size (amount of rich content pages), start working on reviews and deals with your business players like content swaps / selling content. It won't hurt your SEO efforts, more like opposite.
Also you could try to leverage sport related groups in FB and work on presenting your website, yourself as expert and promote not just your website but whole niche.
Work on Youtube videos and get traffic to your website.
Work on Instagram posts and get traffic to your website.
Build a community around with FB group if needed.
Many options. Possible to create tangible results in months.