1)
What is "Anyi va'Amali"?
1.
Radak: Refer to 25:16:1:2, 25:16:1:1*. Amali is my burden in wars.
2)
Why does he ask Hashem to see his poverty and burden?
1.
Rashi: Via this, "bear all my sins"! Radak - Amali should atone, for I fight on behalf of Yisrael.