Indexing issue 40k+ Product

Hey Blackhat World, I need a solution to fix This Website. I have one Website which has around 50k+ products onthe Website, but only the Home page is indexed on Google. What are the solutions to fix this issue? Guide me guys

I am sharing with you the GSC


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Where I am lacking in resolving this issue, please guide me. I have to index all products. Even I have to add the Content As Well now, what am I doing I hope i got the better answer Thank you

How old is the site? And what are the 11 reasons listed for the not indexed urls?

I suspect it will mainly be 'Crawled - currently not indexed' or 'Discovered - currently not indexed'. The chief culprit of these reasons is either lack of any content, or the simple fact that you've started a new site and then tried to stuff thousands of pages into Google's face via multiple sitemaps. This isn't the way to do it. You want Google to find your pages on it's own, via your internal linkage and external backlinks. This makes it easier for them to work out what each page is about, and how it fits in with the rest of your site, and what sort of query intents they will serve. It gives them context.

Work on building branded backlinks to your domain root, and when indexing gets a bit healthier and ranks start to show in the top 30 or so, start with some links to your product category pages.