What kind of camera are you using? The resolution quality is very poor. You either need to set your camera to take photos at it’s highest setting or if you processed these in a software package then you need to increase the output quality a little bit.
It’s difficult to tell you whats good and bad when the resolution quality is so low. Try them again with the camera settings at their best.
Ballyman has a point there, the image quality seem to be lost somewhere along the line.
I looked at the exif of one image posted it is about 500×800 but the original is about 2300×3000. The downsizing could be the problem.
Having said that I think these are good photos. I especially like #2 . Followed by #5
If you are a photoshopper, or do some kind of editing I would suggest darkening (blackening) the very bright area in #1, bottom left.
And the sea in #4 looks great for water skiing but I’d fix that too.
#3 doesn’t work for me.
In general you seem to have a eye for a good subject and the composition is good too.
I think small changes in composition would help a lot, for example the bench in #2 more centred, and the avoiding the wall and its plant in #5 but still getting the water in.