I think the photo’s look either a little over exposed or maybe need a bit more contrast?
The 1st picture I think would have worked better had you focused on the lady sat down as you have eye contact and feel it would have added a bit of depth to the image.
The 2nd pictures doesn’t really do anything for me but I like the 3rd picture of the men on their phones. Only thing I (in my no way expert opinion) would say is to have been a little closer to lose the sign above the window, and again add contrast or pull back the exposure a bit. Is that a pirate in the window there I see?
The 4th picture maybe would have been better if you were further away? Is that a church in the background? If it is maybe you could have included more to put the group gathered in to context.
Hope this helps but definitely keep it up mate!