*Profound comparison*
If it was said to you 1 of these keys opens up a safe box filled with treasures: gold and jewels...would you just choose 1 and guess which 1 is the key, or would try each key to ensure your treasures?
Similar is the last 10 nights of Ramadan work hard *every night* doing ibaadat (prayer, Quran, thikr( Dhikr, Zikr), duaa, charity, etc) so that you will be granted and in sha Allah guaranteed the reward of laylat ul Qadar for sure in sha Allah!