To be honest with you, both on page and off page compliment each other. Off page pushes website in SERP with the help of on page elements including meta data, content etc...

Do these things to escalate indexing: server should welcome Google bot with enough capacity add sitemaps check robots file if it is blocking resources add quality conten...

Can you please elaborate a bit?

Google has sophisticated systems to discredit spam links, but you can avail disavow option if you want to. You can set tough robots file to block unwanted bots. Add ddos...

Possible if any expert can make the gist of video and share only highlights to save time.

Give the internal link to the page. For example, from the shorts page to the blue shorts page with anchor text blue shorts. It will work.

It should be on all category pages.

No need to request this repeatedly. You can win some backlinks in between and focus on improving the content of the web pages in terms of UX. If possible then try to win...

Don't forget user experience (UX): Create a user-friendly website design with easy navigation, clear calls to action, and a well-structured layout. Aim for a positive use...

@maxseovn (120) is 100% correct. Make sure you share you blog onto platforms like Medium, don't forget Reddit or Quora.