#4 She was not a natural wrestler

While Becky was interested in the business and had great charisma and charm, there was one major issue when she started training - her wrestling skills. As mentioned by her own brother in the documentary, he thought Becky was "God Awful".
Finn also realized this soon that she was not a natural athlete. While that is understandable as she was just starting her career, Becky herself mentioned that she was dreadful when she began.
But one thing that the episode focuses on largely is her attitude of not giving up and chasing her dreams with full determination. She slowly and steadily improved her in-ring skills, and later moved to Canada as there was only so much she could learn in Ireland.
The Becky Lynch that we see today might not be considered the best women's wrestler in the world, but she is good enough to deliver a solid performance whenever WWE needs her to. She has had some amazing matches both in NXT as well as main-roster and has surely come a long way.