This is what a hard cut usually looks like when you break it down in editing. Two clips. You are adding the clips in the order you want to transition into, and the second clip is supposedly placed above the first.
If you dabble in mobile editors, most of the time you can add effects, but the real question is how it actually works underneath. The clip that sits above the other one has priority. See it almost like a layer. Whatever is on top is what the transition pulls from first.
For this particular setting I have chosen a wipe. But a transition does not just exist on its own the second you drop it in. You can manipulate its internal opacity, and that is what makes it feel abrupt or smooth depending on how you handle it. Most people never touch that setting. They drag the transition in, leave it at default, and wonder why it still feels like a cut. The opacity is where the real control lives.
