We understand that queue times may be longer while Crucible isn't available for download on Steam (outside of us sending waves of keys every month) so during Closed Beta, we recommend showing up to the weekly Closed Beta test every Friday from 11AM - 5PM Pacific time. Our dev team and other players will be logging on to play during that window, so you shouldn't have a problem finding a match during that window.
There's also a ping-able role you can sign up for in the Discord to be notified when players are organizing pick-up games outside of the weekly playtest.