If a page is not indexed then what are the reasons behind it? Can anybody explain it to me which are the causes??

So, I have submitted some links through the disavow tool. But I am not sure it is working correctly or not. How to be sure that the links I have submiited are correctly done?

I am facing serious problem with this tool. The backlink checker keep stops working!! Anyone else seeing this.

I am starting a new forum with phpbb. As I am new any kind of site business so I don't know much about them. I am launching the forum next month. Any suggestions? Or regarding opening and running forums??!!!!

When searched someone's business in Google it is not showing in the maps. Just in the search results. What does it mean? Is that mean that the GMB of that business is not correct somehow?

As voice search is growing should we be focusing on kw's? I mean they are not meaningless now but they soon can be. Rather than that we should be focusing more and more on what the contextual meaning of the keyword's as Google is doing.

Which ones are better? Highly optimized anchor text that can attract search bots easily and can get indexed at once, or the relevant anchor texts?

Links from author's bio doesn't hold much link juice such as the links from the content, right? But how should I make those author's bio links to pass more link juice?

Which is the easiest possible way to rank inner pages of any site? I have got a couple of tier 1 links linking but they are to the homepage. So, should do I get links for the inner pages too??

Which is a best practice for creating effective ad text?