Help Me Find Datasets To Practice On To Get A Job!

Hi everyone! Thanks in advance for taking time to read this.

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I am new to data analysis. I have some ability to code on SQL and visualise on Power BI but I wanted to put it to practice on SQL Server Management but have no data sets and have no idea where to find these.

If anyone could be kind enough to please give me a list of sites I can get datasets from then I would really be grateful as I am desperately trying to build my portfolio!

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Thanks again to all!