Auto Exposure Adjustment + Fixed sky colour + AI

Three questions:

1) Can I auto adjust the exposure in my pictures, while using presents? If I understood correcly, selecting Auto in the Tone-bar, will adjust all of the panels in that section (shadows, contrasts etc.). I do equestrian photography and might have thousands of pictures to edit. Within an hour, the amount of light might change a lot. Now I have to fix the exposure manually to all of the photos if I want to use presets (whitch I always do.)

2) I have a favourite colour of sky I prefer to have in all of my photos. Can I teach Lightroom to change the sky into my preferences?

3)  Style: I also have my very own style, what I would like my photos to look like. Is there any other ways to teach Lightroom to take a notice of my style, other than presets?

Thanks, Satu