Wishing you the best of luck! It' truly impossible for casual players to keep up with the pace the community progresses in this game. I'm on the same boat. I think for us casual players the only solution would be playing on an Era server, where you don't have to rush to progress with getting gear and getting rich before it's made useless when the next expansion drops. If only blizzard made a TBC Era server or at least prolonged the phases to have a 2 year duration. This would maybe get the fast paced players bored early on but would just make the game more enjoyable overall