Sorry to say, but you have to deal with it. They system is at it is, and at lower ranks, you're just cannon fodder, and a waste of heals/bubbles, and the time to apply those. It's reasonable people don't take lower ranks in, since in majority they don't posses max audacity, corruptions and maps, and are generally unskilled.
On the lighter note, it's relatively easy to reach R5/R6, and having at least the blue rank, you'll find it easier to get into raids/groups. In the meanwhile, keep doing quests for maps, and keep exploring class and general MPVP guides and forum threads to update your knowledge and collect information.
Vilya: Healadder (defiler, R10), Kommisar (stalker, R7).
Snowbourn: Superserial (warleader, R8), Steelstack (reaver, R6).
Brandywine: Manvet (champion, R10 - Retired); Stargash-1 (reaver, R12)