Off-page SEO is in bad shape...

No. Many of the pages are indexed but not all.

Provide a link to your website. I would love to see and maybe give you some valuable advice.

I see a lot of backlinks. Do you have any information about the possibility of algorithmic penalty from google?

I had a similiar issue and i was able to fix it. First download Wordfence plugin or similar. Once you run the scan, the result will show all the spammy pages associated w...

Thank you everyone for your reply. I was hoping to tackle the issue of duplicate content using canonical links. But to my amateurish luck, I realized that the old page i...

What @jaap said - table of contents (better navigation) should help if your only concern is TLDR.

buid more backlinds.

A long text doesn't mean you should break it up into pieces. What is the benefit you try to achieve with this? What a long text need is an index after the introduction. S...

You should tell search engines that, URL olddomain.com/xyz is canonical to URLS, newdomain.com/xyz newdomain.com/yyy newdomain.com/zzz In this way, new pages will be ma...