Adding a glow effect to videos can be done with a few different methods.
One of the easiest and most readily available methods is to adjust the video's brightness and contrast settings. You can highlight certain areas of the video and brighten or darken them as necessary. This will give an overall feeling of glow around those sections.
You can also use a video-editing software to boost the color saturation to help create a more vivid look. Try isolating an area of the video that you want to be highlighted, then adjust the contrast and saturation of just that area to create a more vibrant look.
Finally, you can use apps to add a glow effect to your videos. There are a variety of apps available that you can use to add different types of glows and other effects to your footage. Some of these apps have a range of templates to apply, or you can customize the glow effect to your needs.