Hmm. Where do I start?
The EXIF data says you're using an LG cell phone. While it's certainly possible to take good pictures with a cell phone camera, you sometimes have to work a little harder or think a little differently to do so. A "real" camera - be it a DSLR or just about any modern point-n-shoot, will let you adjust some settings in ways that a cell phone generally won't. Having said that, if you put an expensive camera on fully-automatic settings and don't change anything about your shooting/composition technique, your results won't be much better than what you're getting with your cell phone.
In the two samples you've posted above, the two things I've immediately noticed are:
- Lighting. Outside midafternoon on a cloudy day is pretty low on the list of "good" lighting.
- Composition/setting. In portraiture, the background is nearly as important as the subject. If the background distracts/detracts from the subject (and it does in both your examples) then the portrait is not a success. Look past the subject, look at the background elements. If the background doesn't work, then don't take the picture until you're in a place where the background DOES work.
I'm going to give you a challenge for the next couple of weeks: As you go about your daily routine, take note of light and shadow. Look for light sources, and really evaluate how the light falls on people and objects. Look for light that's interesting; also look for light that's boring so you can know to avoid it.
Here's a little hint: The last hour before the sun disappears under the horizon is called the "golden hour" - it's just about perfect for portraiture, especially at the end of a partly cloudy day. Go outside during that last hour and see how beautiful and interesting the light is, as it falls on faces and objects. Take a friend out to get a couple of portraits (they don't have to be cosplay) in the golden hour light - paying attention to how the light plays with facial features, and making sure to look past the subject to avoid including distracting background elements.
You don't have to travel to a more interesting location. A few steps left or right or a little bit of an upward or downward angle can make all the difference.
Here's a good read called "MOVE YOUR FEET" for making a good portrait in an uninteresting location. in this case, the subject is a car - but at their core, car portraits are (surprisingly) very similar to people portraits.