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No more access to the USB stick and in the disk management it is only displayed as RAW?
That's what happened to me with an Intenso USB stick. Fortunately, it didn't have any very important data on it, but it turns out that you should always have your data backed up somewhere.

Even formatting was no longer possible, so the thing was broken.

Download Testdisk: https://www.cgsecurity.org/wiki/TestDisk