If you're struggling against the quitters, this is actually quite easy to boost like the player matches if you have a partner.
Open a private chat session with your partner and have one player start to create a ranked game but stop before they press the 'Host Game' button. Have the other player hover on the Ranked Game > Quick Match button.
Time it right so the host presses the 'Host Game' button about 1 second before the other player presses the 'Quick Match' button. If all goes well, you should find yourself in the lobby together. If not, both exit out and start again.
It may take a few tries, depending on how busy the server is.