Not bad for a first go at street photography.
Can you please number them? way too hard to make individual critiques as is.
In general a lot of these just had way too much going on, and in focus. An image with too much in it in many ways is the same as having an image with nothing in it.
Notice that your two strongest images, the woman and the duck, and the single man in front of the wall, were also the images with the fewest visual elements. That's not to say that less is always better, but you definitely tended to skew on the 'too busy' side of things with your compositions.
In street photography a lot of times the people are moving enough that you mostly have to stake out your background first, and then wait for a subject. Cities are hectic places and if you aren't very conscious of your background, you end up with too busy backgrounds in almost all your photographs. It's sort of backwards from normal people photography where the subject is established and we hunt backgrounds. In a lot of ways this is part of what HC-B meant by 'waiting for the decisive moment' stake out your ground, know what you are looking for, and then... just wait for it.