I usually check authority of the website and where it comes from backlinks and backlinking opportunities index status speed (prefer tools.pingdom.com as you can choose f...

We always perform an audit and pay attention to other aspects.

I will work on keywords and update it. Thanks

I actually use Logii browser to run multiple marketing accounts. You can try it too! It's quite affordable and has got lots of new features as well. I can share my IDs wi...

Guest posting is the best way to go through. For the easy things, I have just posted 5 example links here, https://www.seoforum.com/thread/blog-post-rules.

do you have any advice about which websites that are free and easy to write something in order to have backlinks

Yes, the Medium set it so. You can find more information here, https://medium.com/new-writers-welcome/new-writers-crash-course-1-how-to-get-indexed-on-medium-dca736e76be5

what is interesting that i can see just one backlink which is from medium on google search console. And why the blog articles that i wrote on medium are onfollow, nofollo...

You can google for it and make your own list. Alternate way to prepare your own list is, follow a competitor's backlinks. Here are a few for you, www.vingle.net www.soope...

Using the Google Search Console, submit manually for removal of those invalid pages from cache and index.