A Microsoft file hosting and synchronization service.
Dear Nikhil Sarna,
Hello! Welcome to the Microsoft Community. I'm glad to be able to assist you. If I misunderstand your question, please let me know promptly.
I understand that you have encountered some problems when using OneDrive. Due to the system version problem, you have to use the old version of OneDrive, but you encounter an error when installing it. I understand the trouble this problem has caused you, and I will try my best to help you solve it.
Regarding the news that OneDrive no longer supports the lower version of IOS system, this news is indeed correct. The minimum version required for the latest update of OneDrive to run is macOS 13.
Here is the official document on this issue: OneDrive release notes - Microsoft Support
I'm not sure which thread you got this old version of OneDrive installation package from. However, we can also provide you with an old version of OneDrive offline installation package. You can try it to see how it works.
https://oneclient.sfx.ms/Mac/Installers/23.054.0313.0003/universal/OneDrive.pkg
Please delete the previous OneDrive before installing. If you get any results, please let me know.
I hope the above information is helpful. If you have any progress or questions, please let me know. Sorry, my next reply will be late, but I will keep following up.
Best Wishes
Pyke.D | Microsoft Community Support Specialist