"servant wives." This refers to Bilhah and Zilpah.
This is a sign of humility and respect before another person. (See: rc://en/ta/man/translate/translate-symaction)
What do you mean by all these groups that I met?
The phrase "all these groups" refers to the groups of servants that Jacob sent to give gifts to Esau. AT: "Why did you send all of those different groups to meet me?"
To find favor in the sight of my master
The phrase "find favor" is an idiom which means to be approved of by someone. Also, sight represents judgment or evaluation. AT: "So that you, my master, would be pleased with me" (See: rc://en/ta/man/translate/figs-idiom and rc://en/ta/man/translate/figs-metaphor)
The phrase "my master" is a polite way of referring to Esau. (See: rc://en/ta/man/translate/figs-123person)