Trouble with the combat sections in Heavy Rain
Solution 1:
Apart from what has been mentioned, there is also a mode where you specify that you are new to games "Easy - I play video games occasionally"
and it gives you more time per action and is a little bit more lenient with accidental buttons.
For the sake of completeness, I felt that the game is significantly harder and tiring with the motion controller, the actions are closer to what you would do in real life but it takes getting used to. So if you want to go that route then you have to try try again.
Solution 2:
I've noticed that in a lot of scenes, following the correct prompts or close to it would still get you slapped pretty badly. A lot of the fights look "almost lost" but then you get one saving grace at the end (the doc fight is a good example, I actually restarted twice not realizing hat it wasn't over).
I think that it only hurt me in the last fight.
Not sure if there's a way to react faster- except replay replay replay. If you play on easy, the prompts are almost always the same.
Solution 3:
"Is there any sort of pattern to the type of motions you're asked to do?"
Not really. The quick-time actions are meant to approximate the actions of the characters on screen.
Not being very good at the fight sequences isn't really a problem though! The game continues no matter what the result of the fight is. So do the best you can, then sit back and let the story continue.