There is no patron saint of fixing things.
Peter is the patron saint of many things and places but not the patron saint of any country.
Saint Patrick is the patron saint of many things but Saint Peter and Saint Joseph are the patron saints of the Universal Church.
Saint Nicholas of Myra is the patron saint of many things but not of Military Intelligence. There is no patron saint of Military Intelligence.
St Anthony is the patron Saint of lost articles.
Monica is the patron saint of several things but not of miracles. There is no patron saint of miracles.
Nicholas is the patron saint of many things, including sailors.
Saint John the Apostle is the patron saint of many things but 'legion' is not one of them.
Saint Anthony of Padua
Yes, Michael is the patron saint of police officers as well as many other things.
Saint Clare of Assisi was the patron saint of many things, but the reason why she is the patron saint of embroiderers is because embroidering means stitching cloth in a certain way to make pictures on it and or writing. So, she was the patron saint of embroiderers because she was the one who invented it.
Yes, among other things, St. Jude is the patron saint of desperate cases or lost causes.