For high-velocity link building, API-based services (typically around $29 for...

https://ariasnewinsights.trexgame.net/why-is-my-page-stuck-on-discovered-currently-not-indexed-in-gsc

For high-velocity link building, API-based services (typically around $29 for 60 credits) help surface URLs faster. However, for core site content, stick to optimized XML sitemaps and improved internal linking