Sudden Traffic Drop After January - Competing with High DA Sites Like Class Central

Hi everyone, I'm facing a significant drop in my website traffic after a spike in January. My biggest competitor is Class Central, & most of my keywords are highly competitive where competitors like Coursera, Udemy is ranking while mine has very low authority score. Despite the spike, my traffic has now dipped, and I'm unsure why.

I've been focusing on: ✅ Content creation targeting niche keywords ✅ On-page SEO improvements ✅ Some off-page efforts (but still building backlinks).

What strategies would you recommend for competing with high-DA sites like Class Central? Any insights or similar experiences would be appreciated!