Hi
With a web search I found:
https://discuss.grapheneos.org/d/2828-encryption-options-for-usb-storage
It's recommended https://f-droid.org/packages/com.sovworks.edslite/ and Cryptomator (it's Non-FLOSS, $$$$).
Is there really no filesystem encryption for USB-C storage? I wish to use native apps for the content stored on USB-C storage.
Thank you