RE: Cards you should add on Splinterlands deck...

I am gathering knowledge about splinterlands.
I created an account and try to play sometimes.
But never win a battle with free cards. I should by some cards. I am also thinking, I have to give it time regularly but now managing time for another game is not possible. I am confused 🤔.
Hopefully I'll join the party in coming days.

Though I do not play it , I know a lot of things from people's post.