Back when I was in the mid hundreds, I used a lopping team for instances like this (as most have suggested). My go-to looping teams of choice are either Kraken-Hellcat-Alchemist-Kraken or Merchant Prince-Hellcat-Alchemist-Kraken. Once you get Alchemist and Hellcat looping it is nearly impossible to stop. Kraken has to be fully traited to work in this team, since he is really only used for his x3 damaged per 4/5 gem match. Another good first troop option is to have Desert Troll or Flame Troll, as they work as good buffers and give you the option to create more yellow/red gems if you need it. I always use the Dragon banner for this build as well.
I get the frustration, but you’ll be able to figure something out. You just might have to work a little harder ;). Good luck! My Level 112 Xbox account feels your pain.