Problems extracting data from LibreOffice Power BI to Excel

Hello friends, I'm having a problem. I do a job and I always need to extract customer data from Power BI Analytics to populate an Excel spreadsheet, but the company hasn't provided Excel On my computer, all the files I download from Analytics come to LibreOffice. Therefore, when the file comes in LibreOffice, I need to paste all the data as plain text (paste special) I need help filtering the data for the day I'm working with, since Power BI itself pulls data from different dates. The help I need is to ensure that, even after processing the data before transferring it to the online Excel spreadsheet, The person I work with says that the data I enter into the spreadsheet is formatted incorrectly and that when she tries to remove duplicate values, she doesn't recognize the data I entered. She says that the data she enters (which is from Excel to Excel) shows a green dot in the upper right corner, but mine doesn't. Can someone explain why this is happening?