Here the Easy way to Change Your Play Store Country and to Download Banned Apps :

Open your preferred VPN application. In my case, that’s Melon VPN. As you’ll see in the image below, Melon VPN keeps things simple, as it opens with a list of servers that have been labelled according to country name and respective flag.
Select the country you wish to set as your new Play Store location, and once connected, you’re ready to move on.

2.Change Play store Country
When you open the Play Store application, you’ll be able to tell if your country settings have already changed by searching for a region-specific app, or by checking the price of a paid application. If the app shows up, or you’re now seeing prices listed in a foreign currency, that’s it! Your change of country has been successful.
If no changes appear to have been made, however, you may need to update things manually. To do so, swipe in from the left edge of your screen, tap “Account,” and select “Country and Profiles.” You should now see both your default country and the new country you have either moved to or selected via your VPN service. Tap it and you’ll be prompted to enter a local payment to confirm the change.

3.Add New Payment Method
You’ll only be asked to provide a local payment method for your selected country if your account has been set up with an existing payment profile. You can take advantage of this by either creating a new Google account, or by adding an additional account that has no payment method on file.

Once you’ve added the account, swipe from the left edge of the screen while in the Play Store app and select the new account from the drop-down menu at the top, then repeat steps one and two of this guide. When you launch the Play Store again, you should find that country has now been changed.
There’s an added benefit to using multiple accounts, as you can keep each one on your device and switch back and forth between different Play Store countries, without having to worry about the limit Google imposes on changing your main account’s country settings.
On my own device, for example, I have one account set to use the Irish store, another for the US store, and a third for the UK store. Switching between them is easy, and once an app has been downloaded, it can be used by any account, regardless of its country settings.
Source: www.android.gadgethacks.com