Three internally flawed women, with traumatic childhoods, are forced to navigate through life’s peaks and valleys in the affluent suburbs of Atlanta, Georgia.

Much like your other logline, this lacks a clear protagonist, event, action, and goal.

Good loglines use specific detail to describe a plot. So, what does "...internally flawed..." mean? State the flaws, not the fact that they exist.
What does "...traumatic childhoods..." mean? Were they beaten, raped, kidnapped? Describe what happened to them that made them who or what they are.
"...life's peaks and valleys..." is too vague as it applies to everyone. What specifically must these characters do, and most importantly of all, to what end? What is their goal?

Best you focus on one character, writing a single protagonist plot is hard enough much less a plot about three. First-time writers should learn the craft and form of a simpler story before trying to write more complex stories.

Is this a logline for a one time feature film or for a multi-episode series?

>>>When one woman experiences an unexpected betrayal

Seems like the best candidate for the protagonist, the character around which to frame the plot.

Is this a logline for a one time feature film or for a multi-episode series?

>>>When one woman experiences an unexpected betrayal

Seems like the best candidate for the protagonist, the character around which to frame the plot.