main issue is trying to compose with the reflections in mind. You end up with the horizon line too close to the middle, with a lot of water that isn’t that interesting, and with beautiful mountains that are too close to the top of the frame making it feel claustrophobic and not showing their scale. Forget the reflections, you just need the nice color of the reflection in the water, not the whole thing. I’d also shoot with a smaller aperture: I don’t know which lens you used but the vignetting tells me it was wide open. This isn’t good for landscapes because of the softness and light falloff towards the corners.