Hey Again Mihir2,
I see, while I am not sure how to make this work other than what I said previously, I would like to recommend an alternative. Have you tried the Gantt or “Timeline” chart? They show categorical data’s existence over time, which looks to be what you are trying to do.
Heres a link with explanation of how to use it: https://support.google.com/looker-studio/answer/14748665?hl=en
Sincerely,
Dylan