Exporting my project - colour issue

Hello everyone,

I'm new to Première Pro and used to other editing software. So I've edited three video projects and now it's time to export them.
However, when I export, and whatever the preconfigurations proposed, the colours of my final image are not at all faithful to those of my project.
More specifically, an almost natural image in terms of colour and pastel colours stand out, hyper saturated and almost fluorescent with an exaggerated exposure. Example: a face with pale skin comes out fuchsia pink....
I've tried playing around with a few extra settings but to no avail. I've updated Premiere Pro and reset the few (slight) colour adjustments I'd made to the images in the project, but it doesn't change anything.

If anyone has a solution please let me know.
Thank you in advance for your help!