If you have an "Action against Site" notice - then your site drops out totally from the SERPs and you have essentially been de-indexed. There will be a notice from the manual webspam team (real person) inside Search Console messages. If this happens, you cannot do much other than fix things and then send a plea and appeal to Google literally begging them to put your site back in their index - because you have cleaned up everything you do (or your SEO company did to your site).

Ultimately, an SEO audit is only helpful if it is understood, and an SEO company is only good if it is helpful. Choose an experienced, data-driven and professional digital marketing company for your SEO audit. But also choose a good, trustworthy and transparent digital marketing company that will sit down with you to explain their audit in plain terms.
Always check All of your website Links Which are Old backlinks or New backlinks Then i highly recommended This tool. So If you are Not make An Account On it Then Take 30 days free trial of monitor backlinks. It’s not “dumbed down” like other low-cost or free backlink checkers Tool, but it’s advanced enough for pros to use. So Monitor Backlinks gets a big thumbs up from me.
Of all the tools listed in this article, Moz Link explorer is an old one & quite popular.  If you want to compare backlinks between two or more domains, Open Site Explorer is worth trying. This tool works best when you have a paid account of SEOMOZ though a free version of this tool is good enough to get you started checking the backlinks of your site and the sites of your competitors.

Thanks so much for offering this helpful tool. It is very useful. In case you want feedback, I think it would be great if you could please also consider including another column to display the linked page (i.e., the actual page that the backlink goes to on the domain). When selecting “All pages on this domain” it is difficult to know which page each backlink is going to on the domain. Thanks for your consideration.
In the meantime, you’ll want to do your research and find some of the most effective website audit tools to make the planning stage a whole lot easier for you. The good news is that the web is saturated with different site audit tools, most of which can help you figure out problem areas that affect your site’s performance. One of the best tools to check out is SE Ranking Website Audit — it can help identify website errors at a glance thus giving the professionals every information they need to work on your site keep it in tiptop shape.
Hi, Great article! the tools you listed in this article are great. I tried only Keyword planner and at present I’m using a long tail pro for Keyword search but I didn’t try the other tools you said. Because I’m new to this and now only I’m learning one by one. At this time, I thought this guide will help me to know more about keyword search tools. It’s wonder and thank you so much for this nice guide.
Note! Google often shows search results for general meanings, rather than specific words and phrases. When you search for a phrase in Google, you’ll see the keyword bolded in the search results. Look closely and you may find words you didn’t search for bolded in those same search results. For example, a search for “HVAC repair” returns search listings with phrases such as “heating” and “air conditioning.”
However, this does not mean you cannot topple them. It just takes more of an effort in terms of content as your page has to build the trust. That is why you will see the "Google dance" happening for fresh content from a site that is not yet trusted or is not very authoritative. Google gives your page a chance and measures user click-throughs when it pushes you to certain spots in the SERPs and then measures user engagement levels when the traffic hit your site through those positions in the SERPs.
×