I was rude

I was walking back to work , i was walking too fast even if it wasnt needed , and i was going to cross the road and a guy was walking straight, i was kinda in autopilot , I didnt paid much attention to him and I miscalculated my distance from him so I ended up passing in front of him when he was already too close (not to the point of hitting ) I think he complained something but I didnt hear him , I didnt process what i did in time , I was dissociating , and I ended up not apologizing
I feel awful now , normally im polite , Im very dissapointed on myself