Given your CPU is from 2016, you could load Windows 7 to Windows 10. Unless you wish to run any pirated software, I'd recommend you install Windows 10. Here is the site that describes how to make bootable USB stick on a Mac:
There is nothing to pay to download the Windows 10, and you could buy a serial number off Lazada or eBay for a few dollars with immediate delivery. You'll need a USB stick. Those things are cheap and useful so I'd say get a larger one, 32 GB or more, although you really only need about 8 GB. Use the stick with BootCamp Assistant as described in the link above - basically download ISO, and use that assistant to make bootable USB. Do NOT continue installing BootCamp.
Now get VMWare or Parallels. It's your choice of whether you buy it from eBay or the official sites. I use VMWare as it creates images that can be run on Windows OS as well, while Parallels can't. So it's easy for me to move them around and ran off anything.
Whether eBay or official site, you'll be downloading a file, and when double clicking it, a desktop icon with drive will appear, and a window prompting you to move app into Applications folder (like any other software). You do that, then start the app, and it'll ask you for serial number. Enter it to register (or use 30 days trial).
Once software is up and running, if wizard doesn't start, insert USB stick and choose New virtual machine, and in properties choose how many CPUs and memory and disk do you wish to assign to the Windows PC running in your Mac. If you want to connect to internet from Windows, set network settings to "Bridged". That's pretty much all you need to set, other than where on your Mac disk you would like to keep the file that contains Windows. I usually make VM-Images folder on my disk and put all of them in there so I know where they are. You might not care and just use defaults. As said previously, give it a single core (1 CPU), and 1-2 GB of RAM (you can change later if it's sluggish), and at least 60 GB of disk space. No need to reserve space (so it doesn't block the whole 60 GB but can grow up to 60 GB). As you have more space you can give more, if you'll install more apps to Windows later, but don't go below that.
You're asked what OS it's using - you can choose auto-detect or choose Windows 10. It allows you to enter Windows 10 key up-front, then (VMWare at least) will do all the configuration and activation of Windows. Once done, there will be Windows running inside a window of your Mac. Once you're done, choose from VM top menu "Install VMWare Tools" which will install all the drivers needed to make full use of the VM you just installed.
Now you'll need to get files into Windows. You can do this 4 ways:
- when you plug in any external drive, you'll be asked whether you want to connect it to Mac or Windows. If you choose Windows, it'll not mount to your Mac desktop, but instead to Windows, like if you had a Windows PC and plugged USB stick in (Note USB stick should be FAT, NTFS or ExFAT formatted. Mac can only READ the NTFS format, but can't write to it. FAT has limitation on file size of 2 or 4 GB, can't remember. ExFAT is readable/writable by both and doesn't have such low file limits - so if you want to use same USB stick on both, use ExFAT format).
- Another option is using Shared Folders. You can in VMWare settings create a folder on your Mac, and you will see it under Network folders in your Windows.
- You can drag and drop files between the 2 desktops, so if you have Windows open in a window, you can drag and drop file from Mac desktop to Windows desktop, or vice versa.
- And obviously if you're connected to network, you could download files from internet, or other network drives, etc.
Once your software is installed, you can decide whether you want to use Windows in full screen (like a PC), or in a Window (this is my preferred way - you just give Windows lower resolution than what Mac has), or in Unity mode. Latter loads Windows in the background and you can't see it. But when you open any applications from top menu, it opens window of that application as if it was Mac application. You can add these Windows applications into your MacOS dock just like any other Mac apps. But understand Windows still needs to load and run in the background for that to happen.
Below is how VMWare looks like on your Mac. Window behind is the one I am typing for you, the blue window is the Windows in a window with Windows Explorer and Chrome for Windows open. The Bridged at the top is where you set the network settings. And at the top menu, in Virtual Machine you have Ctrl+Alt+Del ... and Install VMWare Tools.
The above instructions are for VMWare Fusion. Parallels is similar but as I haven't used it for a few years now I will stick to VMWare.
Hope this is a little more visual.
If you're in a hurry - eBay sells VMWare 11.5 from 80 baht up, Windows from a few 100 baht up for OEM. All you get is link to official download site and a serial number. If you want to be reassured you do the right thing, you can buy VMWare or Parallels from their official websites, and Windows 10 from Bnn.in.th, and if you pick version with the USB stick you won't even have to create one as per instructions in the link above.