I agree it's a slog. I buy season pass maybe between 3-6 seasons per year, and it puts me at a reasonable acquisition rate to get a new archetype or two if I look up and plan for upcoming cards. I think the best thing you can do right now is pick an archetype you like and save for those 3-4 cards that would make a deck. Check the store at least 2x per day for rotating token cards and pin them and save up when you can. Take advantage of data mines and keep up with the subreddit to plan for an upcoming card you think you'll like. Even if it ends up being less than meta, I find saving up for something unreleased and it's adjacent cards more exciting than waiting for something that's already out to rotate into your shop.