Anyone have a good tutorial on migrating an os from an SSD to an M.2?

As the title suggests, I've got an old 500gb SSD running my main OS on my desktop, and I just purchased a 2tb m2 drive and want to migrate over without a big headache.

Does anyone have any guides that they recommend to do this? I haven't tried to migrate an OS in probably a decade, I just usually do a fresh install, but I no longer want to do that as my time/files are worth more to me now.

Thanks!