If we disavow these backlinks from GSC on site Y, will ourwebsite.com's Backlink authority and indirectly Google rankings decrease? Why does site Y use ourwebsite.com and...

I am not sure if there is any potential benefit - it's obvious exploit, with the goal of website Y baiting webmasters to visit the site curious about those inbound links...

These types of backlinks may impact positively and if not then Google itself will ignore while considering rankings.

This kind of links will not help your website grow its authority. In some cases, it may have negative effect on the target site while most of the time they are being igno...

If the code etc. are intact on the page then it seems a Google's cache issue. Re-index the listings again using the GSC once more to fix the issue.

Please check the Google Search Console for any error on the pages and if exists then fix those at your earliest.

You can disavow unwanted links to tell Google to not consider as ranking factor. Visit below link for more information, https://support.google.com/webmasters/answer/26484...

FAQ Schema is a valid and effective markup for providing structured information on web pages. However, for the most up-to-date information regarding the current status of...

The choice between Google and Bing depends on personal preference and specific needs. Google dominates in search volume and features, while Bing is preferred by some for...

It looks it has stopped working. Though, you can keep the code on the pages for a while.