So, the best way we can help is if you post a png screenshot. You can easily customize the look of your VHS retro pack by adjusting the colors, changing texts, and inserting your photos and videos. Once you have all that, and degrain and remove spots, you can use the detail-preserving upscale effect in After Effects to resize larger. This package comes with a variety of VHS-inspired animations, including retro VHS fonts, backgrounds, trailers, and stories, creating an authentic VHS retro look. you can normalize the saturation better with vibrance than saturation and I made a preset that will raise all saturation till all colors are normalized without looking crazy. if you have flicker, I made a flicker removal tool in AE.

the cineon filter works well for dark shadows.

getting white balance right after the black point, white, grey point, and then color correcting works the best. Make sure you understand what the skin tone line is and where it is located in the vectorscope. if the colors are super off, you may need to use a hue control like in AE or photoshop to separate the wrong hues. and you can use a luma matte to only affect midtones and above with the unsharp tool. you can fix colors by reducing some offending colors like magenta with the hue wheel by watching sharp spikes in the vectorscope.

Vhs effect premiere pro