if your car was running great up until now, if you haven't removed any of the fuses in the past the only problem you may run into is a bad fuse...not a missing one.
if the car has a P0016 code that generally results in a timing chain problem stop running it immediately, don't keep trying to crank it and test it for other problematic areas. just take the car in and pay the diagnosis fee to have them figure out what's wrong. then you can decide whether you'll do the repair yourself (if possible), or if you want to have a shop complete the work. totally sucks that this came about, but at this point you need to cut your losses and have a professional take a look under the hood so that you can move forward.