Well I am very surprised my name pop up like this 😅 it embarrassing, as for your two endings you are looking for try looking at “Angel11155” YouTube channel I believe he posted a video in his YouTube account that shows how to get every endings in the game that includes lexy secret ending and the truth ending, so far I use his video to unlock the model employee ending 
thank to his guide, anyway have a look at “Angel11155” YouTube channel it will help you unlock the 2 endings you need 😉.