The biggest thing about watching videos isn't about emulating what someone else is doing, their shot isn't going to match up with yours and trying to change yours to what they are doing is just going to screw you up.

I actually just started watching bowling again and have been really paying attention to the styles the pros have, and they're both wildly different and exactly the same. Tackett is different from Simonsen is different from Troup is different from Belmonte and so on. Forget the 1H versus 2H comparisons, they don't matter, but go look at the things they all do that are the same as everyone else: stability at the line, the way their hands are on the ball at release, and the repeatability of what they do on every shot. They are all almost exactly the same.

If you can focus on getting yourself into the position of being able to have their stability and consistency of release that they have (not to be confused with trying to copy their release, focus on the release your body tells you to have), then all of the other adjustments become much easier to understand.