Are Backlinks Enough to Rank a Page?
No, you can have as many backlinks as you want but still, be ranking lower than your competitors. Take a look at websites currently ranking on the first page. How many backlinks do they have? Are backlinks the only factor for their prominent positions? How do they present their content? What page elements, metadata, and structured data markup do they have? Does Google prefer a content format that's different from your page? Are there any featured snippets or knowledge panels on the first page? If you could you imitate the format and present your version, do you think that you'd had a better chance?
Do your keyword research and then find out the best format currently used for the queries. See if you can offer something elevated to the current state of the query, i.e., a FAQ page, current facts with references, stats and case studies, video content, etc. The intent would be to help Google present a better version of answering the search query. If you can help Google by providing a quick and easy answer, it will reciprocate.