Hi,
Please keep in mind that this is a community forum where Windows users help one another. Microsoft does not directly monitor feedback posted here. If you want to share your feedback with Microsoft, you can press Windows + F to open the Feedback Hub app and submit your report there.
In the meantime, you can use Windows Media Player Legacy, as I believe its repeat option should still work. If it is not installed, you can install it through these steps:
- Go to Settings > System > Optional features
- Click on View Features then See available features
- Scroll down or search for Windows Media Player Legacy
- Put a checkmark then click Add
- The installation may take some time and might appear to be stuck. Please wait for it to finish without interrupting the process, as doing so could cause the installation to become corrupted.