I Quit Being the Sub Male Lead and Now the Original Work is Failing

Having regained my past life's memories, I realized I had been reborn as Riet's childhood friend in a novel, an omega female lead. To make matters worse, I was a beta-type sub-male lead, destined for a bad ending after clashing with Cedric, another childhood friend and the alpha male lead, in the near future. To change this predetermined ending, Edgar decides to step out of this love triangle and support their love, but, "Who said you could forget me? You can't just erase what already happened." For some reason, Riet falls for another man, and Cedric begins to actively approach Edgar after sharing a heat cycle together. "We can't go back to being 'friends' anymore." "......" "I can't....