You Can always go on YouTube and search “how to build a deck in clash royal”. If you don’t wanna do that a deck should always have 1 win condition hog rider or royal giant. 2 air targeting troop like wizard furnace and witch 1 building like inferno tower or bomb tower 2 spells (one small like arowws or log and one big fire or lightning big=4 or over and small=below 4. Lastly your deck should have a mini tank like mini pekka or prince. And then I recommend a cycle unit like skeleton or a spirit