I have a 2012 focus SE that idles pretty hard, and when I put it in reverse/when it's in 1st, it lags and sounds like it's almost in low. When I hop on the interstate, it's super smooth though. suggestions? Should I just do a trans reset? Thanks I'm advance

Hey guys, i just bought a used 2012 SE this morning which is exactly the same as the one on my profile pic. Although i find it good looking as is I would have preferred to have the st or rs( mostly because of the grills/front bumper, spoiler and exhaust) but i dont have that kind of money😅. I...