This is my opinion - many may disagree.
Mental health symptoms don't relate to medications in a 1:1 ratio (if at all). We've tried to create symptom bundles that appear together into DX names, like ocd. Ssris are now used off-label for many dxs - if it works, great - if not, something else is tried. This is too few words to explain it, but add talk tx (cbt) to address specific symptoms. It helps!