I concatenated four columns using this code (to prevent null values to be linked together) in Power Query (Power BI Desktop): ... I was wondering if there is a way to insert a line break instead of the "; " delimiter; that would make my visuals look neater!

In Power BI there is a option in the taskbar when you enter your measure. In Power Pivot for Excel you can select the format directly in the measure editor (Or editor for calculated fields.

powerbi - How to format new measure (not column) in power BI as ...

I need to freeze the first column of my table in power bi so that when scrolling it stays fixed. How it happens in excel for example (screenshot) I've looked through all the options in the preview...

how to freeze a column in a table in power bi - Stack Overflow

You can retrieve the contents of the CSV file using the Get file content action in Power Automate/Microsoft Flow, and then using the Parse CSV action to transform the file contents into a structured format that can be used in subsequent actions in your flow. For instance, you may send emails, update a database, or add items to another SharePoint list using the parsed data.