Need Help Changing OS from Windows 10 to PureOS

I never used a Surface Pro laptop but I do expect some problems in using it with PureOS. Also, in the link above they say:

So my suggestion would be to try Ubuntu instead. I do not create digital art, so cannot tell you precisely which one is better for that, but Ubuntu typically provides a more updated software, so it could be better for your use case.

This is often a problem with “Windows-certified” hardware: the vendor does not care about Linux and when installing it you might have problems with small things like WiFi or suspend because of that. If you want a truly reliable Linux experience, consider buying a preinstalled Linux if you can.