Why when I put it in reverse or drive it started reving

Way too hard to know what could cause that without being able to duplicate the concern with test equipment engaged. I would suggest getting to a local trusted mechanic near you to check it out.

I had a similar problem, while in park when shifting into gear sometimes the engine would surge in rpms and lunge if I didn't have the brake pressed firmly. I heard alot about throttle position sensor and throttle control. Kept telling me to buy new throttle body, blah,blah,blah. I took the throttle body off(only a few bolts holding it in place) and it was really dirty with carbon build up especially aft the pivot points where the flap opens and closes which controls throttle by opening and closing. I cleaned it really good and carefully. Haven't had the problem since and it actually idles much smoother. This is a very common problem with this car. Hope this is helpful.