I like the moment when the black Stickman runs and grabs the mouse pointer. I notice that there is an effort behind coordinating the effects and making everything look like it is happening on a computer screen. What I think is failing is that the story and the way it happens is confusing. I don't fully understand what the black Stickman wants or why this other red one appeared. I personally would prefer to see a Stickman animation made by you but with a story that is not related to the animator versus animation, something original.
It's just a suggestion. If you feel more comfortable working with this idea, you as the artist are the only one who can decide what to do. I think that with more practice animating and making the story easier to understand, your work can greatly increase in quality.
I wish you luck with your next animations! :)