I really appreciate your help with this. I went over your changes and have few questions.
1- Regarding the elbow method, before I was told (not you, probably it was someone else who helped me) to check the scatter plot first and then enter the number where the number of topics started to decline. I attached the screenshot of the scatter plot. This is the reason I selected 8 topics. However, I do not understand how to apply flow variable. I want to apply elbow method in the LDA so currently, I was thinking that I did it correctly. I would be glad if you can explain me more about how to apply the flow variable.
2- When I re-ran the workflow with your edits by using the sample data I shared with you, I saw that number of rows of the original data is equal to the number of rows of the output data (N=20). However, when I imported the whole dataset, number of rows of the original data is 395 and number of rows of the output data is 392. Am I missing something? I attached the whole dataset and would be glad if you can let me know if I am doing something wrong.