Recover 3 Aug & Nearby Recordings

My security unit overwrites footage after two days, yet I still see traces of 6 August files when I scan the disk (57 GB capacity, 53 GB in use) with “Restore My Files.” This tells me the data from 3 August—and hopefully the neighbouring days—is still lingering in unallocated space... (Budget: $30 - $250 USD, Jobs: After Effects, Audio Services, Data Backup, Data Extraction, Data Management, Data Recovery, Video Editing, Video Services)