Recreating a smooth zoom in/out transition from a video

Hello, I'm new to this forum and to video editing. I've encountered a very nice looking transition in a YouTube video that I wish to recreate but am having issues recreating it. I divided my clips in the edit page, I'm also going to the fusion page per clip to edit the clip adding a transform node and using keyframes and the spline tab. However, I'm still having difficulties recreating the effect. If anyone can point out my mistake or screenshot how the spline should look like to emulate the effect, I would really appreciate it.

I can't post the video since I'm new it seems. I'll send the video from YouTube through PM.