Welcome. I think these shots are worth commenting on. Of course the following is just my opinion, for whatever it is worth.
#1 this is the best IMO. I've seen this are photographed quite a bit, but I think the light really worked in your favor and you got a good composition. I like the sky (just the right amount as well) - with all the features in the foreground, simple and complimentary sky works well.
#2 Except for the horizon not straight, the composition works. Unfortunately the light doesn't, and particularly the sky. I know you likely didn't have 5 days to wait for great light, not much you can do about that. I do like the trees in the lower right, but with this light, the color pallet doesn't work with the rest of the image.
#3. Not sure what you were going for here. You have a moody Alcatraz (I think?), but with a bright while sailboat and flowers. Maybe if there were part of a set of 'contradictory' photos, it might work. Like this, one of beautiful scenery and power-lines etc...
#4 Looks like it could use a polarizer and different light. Midday can work with more clouds, but usually not without something interesting going on. Assuming that you couldn't actually find an interesting foreground, the arrangement of grasses in the foreground works.
Overall, good/very good composition.
All your editing looks good to me.
On 2 and 4 the light is not great for the subjects. With more time you'll get more opportunities to get good light, but thinking about how you schedule your time might help (I have no idea what kind of trips these were taken on - specific photography or family trips are very different.). Also good light isn't necessarily sunrise/sunset - it can be moody like the Alcatraz shot, wispy clouds, thunderstorms and even rain. Maybe a best description would be 'interesting' light.
I would expect you to get some really great shots in the next few years.
