Yes. In Lightroom, use a local adjustment tool rather than a global exposure change. The usual choice is the Adjustment Brush, where you can lower Exposure and paint over the distracting corner. Use Feather to keep the transition soft, and adjust Flow and Density to control how strongly the effect builds up.

If the area fades gradually from the edge inward, a graduated adjustment can also work well. In either case, reduce the exposure only as much as needed so the darkening looks natural.

If Lightroom’s local tools still don’t give you enough control, you may need a more advanced editor such as Photoshop or another dedicated editing tool.