I don't want to sit around waiting and doing nothing about this.
I don't want just stay silent and do nothing about it.
ご質問ありがとうございます。
① "I don't want to sit around waiting and doing nothing about this."=「私は座って待って、何もしないということはしたくない。」
② "I don't want just stay silent and do nothing about it."=「私はこのまま単に黙って、何もしないままではいたくない。」
ご参考までに。