part05.rar is just one piece of a larger archive. You typically need all parts (Part 1, Part 2, etc.) to successfully extract the full patch.
To open it, use tools like WinRAR or 7-Zip . You only need to right-click the first file (Part 1) and select "Extract Here"; the software will automatically pull data from the other parts, including Part 5. part05
The patch transforms the standard PES 2021 experience by adding content not found in the original game: You only need to right-click the first file
Ensure your PC meets the basic specs for PES 2021, such as 8 GB RAM and a dedicated GPU like the NVIDIA GTX 760 or better. part05
If you'd like, I can help you find a for this specific version or help you check your PC's compatibility for the patch.
