get Cognitive behavioural therapy. Consult for further queries

Your physical recovery is complete — that's great. The episode of wanting to throw limbs in the air was likely Akathisia, a known side effect of Thiocolchicoside (inner restlessness/urge to move); you were right to stop it. The current mental sluggishness, hesitancy going out, and feeling restricted are classic post-accident psychological responses — the brain subconsciously associates going out/movement with the trauma, creating avoidance and a sense of heaviness. This is common after accidents and is not a physical problem. Gradual resumption of normal activities — starting small and building confidence daily — is the most effective approach.

Consult a psychologist