Given the krebs cycle doesn't produce much atp for the cell, what would you say is the main purpose of the krebs cycle in cellular respiration?

The main purpose of Kreb's Cycle is to reduce the electron carriers: FADH2 and NADH. These electrons are then passed to the electron transport chain by these carriers to generate a concentration gradient of Hydrogen ions between the intermembrane space and matrix of the mitochondria. This drives ATP synthase where the actual majority of ATP is synthesized.