Star Wars Fallen order - power element overlooked, what now?

I recently started playing the new Star Wars on my PS4. I can't get any further on the second planet: According to the Internet, there were 2 elements of power on the first planet. I only found one! I'm stuck in the grave now and don't know how to travel to the first planet to get the element.

You can't find more than one power at the beginning, you can only do that later.
If you get stuck, just take a quick look at a lets play to see how you get out of the grave.

I've already done that, but he already had the power 😬

Then you overlook something in the grave. What power and grave is it about?