Lighting is very important to take a good picture of yourself. Just like light helps your eye to see better. Good lighting also helps your camera to “see” better.
Therefore, the better lighting you have, the better pictures you will have.
Going outside on a nice day is an easy way to accomplish this. (Don’t worry about the background, we can remove it.)
If you feel better inside, then go somewhere that is brightly lit, or bring some floor lights into the room with you.
Remember, better lights will make a better product in the end.