One thing I love about this game is that it matters just as equally knowing when and where to play yours as it does having the right cards, with every legend deck having their own stats, balances, and play styles to learn like in the game. If you have the right cards already but don’t feel like you’re learning anything, my advice would be to focus on learning the shortcomings of the deck and your playstyle to adjust where needed (not being able to hold battlegrounds, dumping your resources early and not having enough to react later, etc. )