You’re so young. You have a lot of time left to make a bunch of dumb mistakes. Although if you’re looking to get married you should be realistic about it. 30+ year old women who drink wine with their cats are at a disadvantage. Depression is how you know your situation doesn’t match your expectations. For example, I’ve always expected everyone to be kind and honest when obviously most people are not. It took many years to adjust my expectations and I’m happier now. Do not take antidepressants; they only help you ignore your problems.