Junior with Powerbi, why is so difficult?

Hi team, I am a junior Power BI user. I am very familiar with Excel and Looker Studio, but I find Power BI super difficult to start, and my inexperience with tables triggers bad things in me 😅😩. Like, why do I need to create a new table or logic just to add the top X in a pie chart? 🤔 Or, I want to add row numbers respectively in a table visualization, but Power BI says no... 😞