To overcome depression self love is absolutely crucial.
You are not ready to be in a romantic relationship right now. That kind of love only happens once you love yourself. You will know when you're ready because you won't have these thoughts of ending it all if you're not in a relationship- because you will be happy even just being alone. Love is meant to compliment your existing happiness, not to create it.
Keep reaching out to others and LOVE YOURSELF.
Until I learned to be happy on my own, I found only abusive, unstable, or deeply codependent relationships. The year I kicked depression to the curb and started to love myself, I fell in love for the first time. Lead others by example and love yourself the way you want others to love you. I promise they will.
Sorry if I sound like I'm preaching! But i struggled with what you're going through. Know that the reason you aren't finding the love you crave is because you're not ready, not because you're not good enough or that true love doesn't exist for you. I swear on my life it really really does and you will find it.