Boss defends my bully coworker… what now?

I’m seriously at a loss here. A coworker at my job constantly speaks to people in a harsh, aggressive way—me, his direct reports, everyone. One person already quit. I tried to handle it the “right” way: spoke to my manager (who favors him), then HR. HR asked for evidence, I gave it. Next thing I know, my boss tells me I’m too sensitive and starts defending the guy. Even said “you can’t let people affect you like that.” I’ve been applying to other jobs since January with no luck. Therapy helps a little, but the toxic energy is draining. Has anyone taken FMLA to job hunt? Did it help? #toxicworkplace #hrfail #mentalhealthmatters