You can get some inexpensive ring lights from Amazon. Looking on Amazon now, I see one for about $17 USD and there's also one for about $30 USD. You can also open the curtains and pull up the blinds on your windows to create natural light, especially if it's a cloudy day, but otherwise bright outside. I also have these LED strip lights hanging around my bed room that lets me adjust the brightness and color of the lights, so that I can control how bright they are when I'm doing videos.