You don't electricute a steak and expect logic.

Depression is a social relation. Just because blue team won doesn't mean your relationship to society has changed. Democrats and Republicans both agree on capitalism, they differ on implementation but they don't want to end capitalism.

Under capitalism, a human is only valuable if they are productive. If a human is unproductive, then they have less, zero, or even negative value depending on how one approaches the topic.

Under capitalism, your function is to serve people who can pay you. You are replaceable always, and the less you're replaceable, the more pressure is placed to make you replaceable. The people who need you the most - the poor, the children, the sick, the elderly - are most often the people with the least money to pay you. The people with the most money to pay you don't need you personally, they just need a bunch of people to operate their profit engines, and many or even most of those profit engines are genuinely anti-social.

Your depression has nothing to do with who is in office and mostly to do with the fact that society wants you working or dead.