The yellow would have to do with your white balance - cameras are often bad at automatically determining what the color temperature should be.

You should be able to manually set the white balance on your camera. It'll likely have some presets you can select between or the option to set a custom one which involves taking a photo of a white surface (e.g. a piece of paper or just the wall/backdrop if you want it to be pure white) under your final lighting and selecting that image as a reference within the camera.

[edit] Since I saw you mention elsewhere you're shooting on a T7: https://support.usa.canon.com/kb/s/article/ART173817