exFAT doesn’t support journaling, try formatting it in NTFS.
Most people, when they consider the implementation of a journaling FS, are concerned with FS resilience and data integrity.
With those goals in mind, NTFS is more of a Fisher-Price approach to journaling, since NTFS does not do data or block-level journaling--it is a record-oriented meta data only journaling approach--designed primarily as a performance enhancer rather than a means of enhancing data persistence.
Furthermore, all NTFS objects are files. Metadata is stored in files, and the journal is just a file stored at a midpoint within the FS boundaries. As such, all NTFS structures are subject to fragmentation (NTFS does not self-defragment), corruption, and loss--leading one to reasonably conclude that NTFS installations don't age very well at all.
If your goal, in using a journaling FS, is data integrity, you would be far better-off using a non-ms, data-journaling filesystem; and maintain multiple back-up copies of your data.