Good luck and bad luck

Ordered new tube, took the tire apart .. looked and looked for the hole, it was tiny , like the size of a ball point pen , nothing in tire, could not find a hole ??? really strange. the hold in the tube was not on the face of the silck, more like sidewall, very low on sidewall ??

went out Saturday and went 3 rounds then had a .50 part fail me .. grrrr