Next frame button

I use this app for every video I need to make, Im currently having the hardest problem, Im trying to freeze on a specific frame, but the timeline is so sensitive, as soon as I lift my finger, the timeline moves 3-6 frames. I would like to see 2 buttons while video playback is paused, a next frame button and a previous frame button. To allow for accuracy.

Rp45678 about iMovie