I second @tsure’s advice.
Once XAMPP is installed and working, ALL you need to do is create a folder inside htdocs and unzip the WordPress files. Then goto localhost/(your-folder-name) and the WP install will walk you through the rest. You can use ‘test’ as your database name and ‘root’ as the db user with NO password because security usually is not a concern on local development. As per MySQL docs, ‘test’ is a built in MySQL database for the purpose of testing/development.
bitnami just confuses things ??