In a large bowl season steak with oregano, salt, and pepper. Set to the side.
In the Instant Pot, set the saute setting for 7 minutes. Add oil into the insert. Once oil is hot, add in onions, garlic, peppers, olives, and bay leaf in. Saute for about 4 minutes, stirring often. Next, add in white wine and tomato sauce. Keep stirring until the timer goes off, about another minute. Next, add in water, mix and then drop in steak, being sure to flip a few times to make sure that the sauce covers the steak.
Set the Instant Pot on a high pressure setting for 38 minutes, then do a natural release when the times goes off. (Be sure to hit the cancel button when the 38 minute timer goes off.)
When the Instant Pot has depressurized, remove the beef and shred it in a separate bowl. Remove the excess fat and return the beef to the Instant Pot. Mix the ingredients together. At this point taste and add additional salt to your liking. At this point, add in lime juice to your liking as well.