I am a quite shy person ad often, when i find an interesting composition-subject (like a person doing something, a goup of people in a nice setting etc), i struggle to capture it because i feel like i’m being rude taking pictures without their approval, but at the same time i think that, by asking them, the spontaneity of the shot would be compromised. What’s your take about it?
Try to find people that want to express themselves, maybe even establish a little relationship before you start shooting so you can gain some trust and they “collaborate” with you. I find this part in photography also a nice thing- as the camera helping you meet people and exchange some moments. Most of them will be too busy to focus on what they are doing anyway if you say you shoot them while they are doing things, in a group, etc. I heard a great documentary filmmaker and photographer tell something like “you don’t want to steal someone’s image, you want to shoot people that are glad to be shot, to say something through your camera”. This mentality helped me loads with my work. Try and see if it works! good luck shooting!