having set autorecovery backup for every [15] minutes, i now hope to recover four hours of potentially lost work… but don’t know where to access the stored backups… can i?
AFAIK LibreOffice should ask you on the next run if it has anything to restore. If it doesn’t then you might be doomed.
If your crash happened before you did set this option, then you are definitely out of luck. Although this should be the default.