Nice start, hope you're enjoying your new camera. Just a suggestion, as a general rule, on the landscapes (like the first image), best to use a smaller aperture (~f11 - f16) to get more of the shot in focus and sharper.
Nikon Z8 with 14-24mm/2.8. 30 sec exposure at ISO 3200. Edited using Adobe raw/photoshop. Raised shadows in foreground, lowered exposure of electric lights in background. Single exposure.
A few days ago, I visited Tadoussac, a nice, quaint city in Quebec, on the shore of the Saint Lawrence River. The next day I went on a boat trip - Whale Watching. Unfortunately, the whales were around, but none breached. Got a few shots of their backs and fins.
All sity shots were taken with Zf and Z 24-120 f4, all river shots were taken with Zf and Tamron 70-300.