Those look great, or certainly in line with what consumers today want, if a bit dark due to the loss of HDR information when posting here; you should certainly be able to edit them to brighten them up a bit if you so desire. Exposure was clearly set to avoid overexposing the bright snow, an issue you'd have even when taking a photo with a professional camera.
If you want less-processed versions you will need to shoot in ProRAW or RAW via a third-party app and process them yourself:
Take Apple ProRAW photos with your iPhone camera - Apple Support