Once upon a time, I was in my arena top 20. But I have not been able to keep up with the teams at the top, and now I've fallen out of the top 100. I'm noticing the teams at the top all have one of 3 characters that I don't have: Revan, Traya, or C-3PO.
What I do have is here: https://swgoh.gg/p/214179885/characters/
Is there any way I can get back to where I once was using what I have? What teams should I use to face Revan teams? Or is it just a hopeless cause until I get one of those 3 characters? I'd appreciate some good advice. Thanks!