I heard that the maid combo is very good, but very slow. Otherwise, focus on red/pink cards, I like them. They are fast.
If you ever played magic the gathering, I use the same colors. Red for fast, white for heal/defense, green for strong, blue for control, black for debuffs. Granted, I made this before MTG Arena was a thing... I should have given you a deck of all colors at the start because different players like different things.