I would do light rail to Hoboken then PATH to the city. You could try the buses as well. The problem with the buses isn’t the reliability but how crowded they get. Weehawken is the last town before NYC so by the time the buses get there sometimes there’s not even standing room left. Also the lines at the Port Authority on the way home are not the most fun way to end your workday. The train is lower stress.

The ferry is arguably the best way if it works for you. It’s just super expensive (like 3 or 4x more than the alternatives).