This is normal. Your camera LCD is not showing the pure RAW data; it shows an embedded JPEG preview processed using the camera’s picture style and tone settings. Lightroom renders the RAW file using its own default profile, so bright, highly saturated highlight areas can look different even though the underlying exposure hasn’t changed.

A common fix is to change Lightroom’s profile from Adobe Standard to a camera-matching profile such as Camera Neutral (or another Camera profile) in the Camera Calibration/Profile or Profile panel. That often makes Lightroom’s starting point look much closer to the in-camera preview.

Also, the highlights may be clipped in both versions, but the difference you’re noticing is largely how the color in those bright areas is being rendered. If needed, you can further refine the result with Lightroom’s exposure/highlight controls.