Few months ago, I changed my site's structure. Google Search Console (GSC) messed up, and I didn't know it. After knowing it, I changed it back to the old form.
However, on my GSC, it is showing 619k urls are "Crawled not indexed". I requested new validation a few times, and it ended up with FAILED within 3 days
I inspected the failed URLs, it seems there is nothing wrong with them. Anyone can help with this case? I also want to optimize google SEO, to have more visitors from google. Right now, visits from google is only 4% of all sources (250 from google over 6k visitors daily), which is a too low ratio.
Please help

However, on my GSC, it is showing 619k urls are "Crawled not indexed". I requested new validation a few times, and it ended up with FAILED within 3 days
I inspected the failed URLs, it seems there is nothing wrong with them. Anyone can help with this case? I also want to optimize google SEO, to have more visitors from google. Right now, visits from google is only 4% of all sources (250 from google over 6k visitors daily), which is a too low ratio.
Please help
