Hi, as discussed on the phone, please work on the following recommendations!
1. Guest Posts
We have quite a few blogs so what you could do is find bloggers who allows guest posting and try posting our content on their blogs and get a backlink from there. The only thing is the blogger's site should be extremely related to our content and the blogger's websites domain authority should be between 18-24 and page authority should be between 18-40. (Bloggers with a website with a DA and PA between the given numbers generally agree to it.)
2. Spam Score and Quality Backlinks
We've been giving backlinks but the quality of the backlinks is not that good and hence the quality of the backlinks is not that good our spam score is 2/17. It should be between 0-1 max. So need to work on quality back links! also, I suggest you read this article to create quality backlinks and start working on it. It's very simple and the whole procedure is mentioned in the article itself. (You can use linkcentaur.com for faster indexing of links)
3. Change Backlinks http:// to https://
From now, start giving backlinks from HTTPS:// and not HTTP://
4. More Keywords
Please do a keyword research and let us know the volume of the respective keywords and which new keywords we should add.