I'm no good at 3D games so it won't be fair to judge your game. But the game is pretty good for given the deadline and the fact that this was your first game jam.
Unreal is definitely a good choice for 3D. But I think the game lacked in-game helpers, likes pop-ups and in-game texts to help understand the gameplay.
There was one more game submit by someone where the made a pretty good 3D dog animation. If you would have teamed up with them then this game would have been much better.
Also, just my thoughts, try not to use click bait images unless you know that your game is so good that users will not mind the click bait😅