One of the things that makes social media a bit more attractive than search engine optimization is that you get to maintain a bit more control over your success. You can always find new ways of improving your strategy and you can learn from your mistakes and your wins so that you can improve your traffic in the future. The same can't really be said about SEO - although it's very clear what not to do, it's not always as clear exactly what strategies can help you improve your ranking.
If you’ve done all of this, and you’re still not getting the traction you’re looking for… you may need to take a closer look at the other aspects of your digital marketing strategy. Are you using creative content marketing ideas to send positive signals to search engines about your content? Are you leveraging your social media accounts to send a steady stream of traffic to targeted pages? What’s your backlinking strategy? Are you using tools like HARO to earn valuable backlinks to your optimized content? Each of these is one piece of the puzzle, and a fully developed strategy always produces the strongest results.
The truth is that a major problem for search engines is to determine the original source of content that is available on multiple URLs. Therefore, if you are having the same content on http as well as https you will “confuse” the search engine which will punish you and you will suffer a traffic loss. This is why it’s highly important to use rel=canonical tags. What exactly is this?

Another tip you can use is just reach out to the prior agency and say something like the following: “We realise you were using link networks for our website which has resulted in a Google penalty and loss in business. Can you please remove my website from any link network you have built?”. If the prior agency is decent, they will remove the links from the network.
Good point,The thing with this client is they wanted to mitigate the risk of removing a large number of links so high quality link building was moved in early before keyword research. So it is on a case by case basis, but defiantly a good point for most new clients I work with who do not have pre-existing issues you want to do Keyword Research very early in the process. 
Beyond organic and direct traffic, you must understand the difference between all of your traffic sources and how traffic is classified. Most web analytics platforms, like Google Analytics, utilize an algorithm and flow chart based on the referring website or parameters set within the URL that determine the source of traffic. Here is a breakdown of all sources:
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