1)
What is "Yadayim Lanus"?
1.
Radak #1: It is a place to flee to.
2.
Radak #2, Targum Yonasan: It is strength.
3.
Malbim: They [saw the city in smoke and the camp in front of them, and] did not know what to do.
2)
What is ha'Am ha'Nas?
1.
Rashi: It is the Yisraelim who fled to the Midbar.