Starting intermittently

My car cranked over and I got it to work. When I came back to my car it would no longer crank so I got it towed home. The next morning I get in it and it would not crank, but I put it in neutral and then it started. I ended up replacing the neutral safety switch on the transmission (it was the most common theme in posts I read online) and was able to start up the car in park again. I drove it around the neighborhood and made sure I ran through all the gears. When I got home I turned it off and tried to start it up again in park and in neutral, which it did with no problem. I then decided to let it sit until the next morning to make sure it would start again. When I got in it this morning to leave it would not start or crank in any gear. I went on with my day and came home four hours later got in my car and it cranked from park again. I have no idea what is going on. Any help would be greatly appreciated.