We have a scenario that we lost some data and now we want to restore the SP online site collection. I.e., we lost data on 15 days back. Due to some reason, now we want to bring back the site using Point In Time Restore. Is it possible to restore the site collection, after 15 days of deletion. MS says they will retain 14 days of daily backup. In my scenario, as per MS, 15 days crossed. So it is possible to restore?
Deleted SharePoint sites are retained for 93 days, not 15 days. After 93 days, sites and all their content and settings are permanently deleted, including lists, libraries, pages, and any subsites. About how to restore a deleted site in the new SharePoint admin center, please refer to the following URL: https://docs.microsoft.com/en-us/sharepoint/restore-deleted-site-collection