If a decryption tool is not found, one option is to replace the hard drive and operating system and save the locked drive offline. A decryption tool may become available months later to free the data at that point.
Microsoft has released Windows File Recovery, a new Windows Store app that may help you deleted or corrupted data. Instructions and FAQ for this are available at support.microsoft.com/en-us/help/4538642/windows-10-restore-lost-files
Google’s Chrome OS is a secure choice for an operating system, but older devices may no longer be supported. When a Chrome device reaches its Auto Update Expiration (AUE) date, automatic updates from Google will no longer be provided.
iXsystems announced in March 2020 that TrueNAS CORE is the new name for FreeNAS, the popular open source NAS (Network Attached Storage) operating system. This was done to unify branding with its TrueNAS Enterprise product. Additional features were added to the TrueNAS CORE product as well. Documentation for TrueNAS is available at www.truenas.com/docs/hub/.