It is possible to index Google Spreadsheets in search engines. To be sure of it, search 'wedding planner spreadsheet' in Google, you will see the results. You can try thi...

@rohit There are many free plugins for page caching which improves overall load speed. For example, LiteSpeed Cache.

The analysis requires to check Google Search Console.

Internal linking will be handy here. Link the pages with proper keywords or key phrases. For example, link Honeymoon Packages page from Honeymoon Package for 2 days with...

is there any free plugin for improving site speed

1) Audit the content 2) Make sure your website is mobile friendly 3) Make strong backlinks.

These pages that have neither clicks nor impressions should be deleted and 410?

At least it's a worth trying to experience and compare.

Thank you for your reply! I saw that he has that plugin. So it's better than wprocket?

The main contributor for the high speed is the WordPress plugin 'LiteSpeed Cache - All-in-one acceleration, caching plugin for WordPress'.