[Beginner] So the real way to build good sets quickly is basically money?

I've been playing for a month and got to Platinum playing dinosaurs cause they're simple to use, but clearly not competitive level against more elaborate decks. I've been using my gold to just buy packs and use the wildcards to craft some cards.

I've been looking at some potential decks to build but man... It takes ages to accumulate wildcards to build them. And once I accumulate enough, I basically can only really craft one deck until I accumulate even more wildcards (so several weeks). It seems the only way around it, it's to just suck it up and use real money to speed things up.

Are people really that patient? Is there something I'm missing? Any other way to build solid decks?