I understand your frustration of Gold arena, having gotten squeezed down in the last six weeks or so as well. It's been a lot more difficult and forced me to build a go second team around Seeker to try to combat Arbiter/speed lead teams that don't have Madame in them, for example. Having Dark Elhain ready for Tormin teams too, as another example. It's forced myself and a lot of others to have answers ready for more teams now that arena has gotten harder, as we were warned about months ago.
In theory, Gold (and arena in general) should get harder over time as more players play and make their way towards the end game. Teams get faster and more efficient and that in turn forces us to have to make adjustments to our teams.
Can you post your roster, champions that are geared out for arena? It could be possible to make improvements and we have quite a few players on this forum who are strong in arena. I would prefer you don't quit and get to enjoy the game again.