I can’t find a way to unstake my ADA.
When you stake ADA, your funds aren’t locked or frozen, and you don’t need to unstake your funds in order to transfer them (e.g. out of your wallet or internally to another Cardano account).
Before you transfer your ADA, be sure to withdraw any earned rewards to move them to your available balance and make them available for transfer too. You’ll continue to earn rewards into that account for 2 more epochs, so it’s advisable to leave a small amount of ADA in the account to pay the transaction fee needed to withdraw these later.