I'm a little bit shocked by this thread, to be honest. Judging by my own experience with the game, as well as reports I've read from users of this forum, this game rewards you for playing it in the most realistic way possible. That's not to say that there aren't ways to exploit the system (like bowling yorkers every ball, which, like most exploits in videogames, seems boring as hell to me and I don't know why people would bother), but if you want to have an immersive cricket experience, you can successfully do that and have a great time.
First tip I would give is one I picked up from someone on here: use the information given to you about the batsman. If they have a weakness with the back foot or flat bat shots, bowl more short stuff to them. If they have a weakness with the front foot, bowl fuller. It's so satisfying when you are peppering a guy who has a weakness with the short ball with bouncers and he ends up smacking one straight to a fielder or edging to the keeper. Or when you bowl a couple outswingers at someone who has a front foot weakness then swing one back in and get him LBW. Other than that, the way I approach the bowling is just as I would if I were lucky enough to play pro cricket in real life. Yes, to some extent I base what I bowl on the weakness of the batsman (like all professional bowlers do) but, particularly in a Test match, where I typically aim to bowl is where every world class bowler in the world typically aims to bowl: around a good length, on or outside off stump. I'll put about 70% of the balls there (usually swinging/cutting them away, then bringing one back into batsman) and the rest, depending on the batsman, will be occasional full balls on the stumps to try and get them LBW or bowled, or bouncers. Sometimes you go a while without getting a wicket, and it starts to get frustrating (just like in real life, of course) but often they'll struggle to score if you remain patient and eventually you'll get that wicket you've been searching for. I mostly play on Pro and I've never had a side make more than 400 against me.
This is turning into a bit of a rant but let me just share the best experience I've ever had bowling. It was in a Shield match in career mode. I was bowling to Philip Hughes who had made a double hundred against us (Bushrangers) in the first innings. There was a big crack on the pitch just outside his off stump (he's a left hander) running down half the pitch and so I decided I'd have a go at bowling around the wicket to see if the ball would misbehave if I could land it on the crack. (I'd seen the ball seam before from what I think were cutters but never seen anything come off cracks at this point.) To my delight it totally worked. I would bowl either inswingers or outswingers and whenever I managed to get it on the crack the ball would, if it was an inswinger, pitch then straighten, or if it was an outswinger, pitch and then jag toward the stumps. Eventually I got him out bowled after bowling two outswingers that missed the crack and went away and then getting one on the crack that got through his defense. I then proceeded to watch it over and over again on replay.
