Step 1. Install Tor from the official website.
Step 2. Navigate to your Tor folder
Step 3. Navigate to Browser -> TorBrowser -> Data -> Tor
Step 4. Open the file called "torrc" using a text editor.
Step 5. Add this line to it:

ExitNodes {REPLACEWITHCOUNTRYISOCODE} StrictNodes 1

Step 6. Replace "REPLACEWITHCOUNTRYISOCODE" with the country's iso code. For example if you want your exit node to be in Netherlands (and get a NL IP), replace it with NL, it would look like this:
ExitNodes {NL} StrictNodes 1

Step 7. Start Tor, wait until connected, check if your IP is what you wanted, enjoy!