My laptop was formatted recently. After the format, I realized I had forgotten to copy my brother's pictures and software before the format. He wants them so I have to recover them.

I already tried EASEUS Data Recovery Software but the issue is that EASEUS requires one to make a purchase before lost files can be restored.

I need a good Data Recovery Software for Windows OS that is FREE and will allow me to recover most of the files. Please recommend!

Try Recuva , but the chances of recoverignfiles after a format is quite low

Try Wise Data Recovery, it is a free data recovery software to recover deleted photos, documents, videos and more from your local or removable drives.
Also, there is a list of top free data recovery tools for you:
https://www.cisdem.com/resource/best-data-recovery-software.html

Formatting laptop means you have lost everything from the hard drive you were using on the laptop. To recover data from that drive, it is recommended not to use it to prevent the data overwritten issue as data recovery from the overwritten hard drive is not possible. Just download the Stellar Phoenix Windows data recovery - Home and connect your hard drive as the external device and start the data recovery process.