Indexing tools aren't magic, so match them to your scale. For high-volume link...

https://super-wiki.win/index.php/Giga_Indexer_Success_Rate:_Is_80%25_Within_72_Hours_Good_Enough_for_Tier_2_Links%3F

Indexing tools aren't magic, so match them to your scale. For high-volume link building, look for API-based services that push requests in under two minutes