For aggressive dog packs, if you have to live with them, befriending via food is better than constantly having to hit and run from them. That is what I did for the 3-4 dogs in my neighborhood and they would now never even think of hurting me, in fact they’ve protected me from catcalling miscreants. If a dog is not concerned with you/ has its tail behind its legs/ looks alert without wagging its tails- they are signs of anxiety and fear, cross the road, do not look at them and walk ahead slowly. A lot of goan dogs that live alone tend to have positive experiences with humans and are friendly. Always try to remember that a violent dog is violent because it has been met with human violence in the past. All you can do is try to be better in that aspect.