Debian is an OS that can be installed on multiple devices, even those with smaller processor capacity.
Latest Debian images
Debian 10.9 (released on 2021) ↗
Smaller images based on processor architecture:
Debian on Windows
Debian can be installed on Windows as an app. You can download Debian through Microsoft Store.
The installation is performed in different ways depending on the version of Windows. Or simply, you can download and click install and follow the standard installation procedures.
Debian on Mac OS or Apple Computer
Debian can be installed on Mac OS as an virtual machine. First download an virtual machine software such as Virtualbox for OS X Hosts or any other similiar app. Then download Debian image and install.
Debian can also be installed on Apple PC as an standard OS. However the number of models that support this installation method is limited.