6:2 Have mercy on me, Yahweh, for I am faint. Yahweh, heal me, for my bones are troubled.
Bones cannot think therefore cannot be ‘troubled’.
Not that there aren't plenty of examples of "true but not literally true" in the Bible, but how did you not know about the definition in bold?
1. To agitate; stir up.
2. To afflict with pain or discomfort.
3. To cause emotional strain or anxiety to; worry or distress.
4. To inconvenience; bother: May I trouble you for directions?
Source: American Heritage Dictionary