I agree that UMD - CP is a very good school and from prior posts it looks like you are in the CS program which is quite strong. If you are miserable then I can’t imagine how unhappy you would be at a CC. Please recognize that if you do well and put your all into UMD you can have a very good college experience and should have many wonderful opportunities available both during and after college.
Also keep in mind that elite colleges take very few transfer students so your odds of transferring in from a CC (or even from UMD) are slim. If you focus on transferring instead of making the most of UMD it will stand in the way of your making meaningful friendships, developing relationships with professors, and getting involved on campus. I’d stay at UMD with the intent of remaining all four years. It is fine to throw in a couple of transfer applications but don’t count on it working out.
Think about what is making you unhappy at UMD and if it is in your power to change some of those things moving forward. If you decide to be miserable at UMD then there is a chance that you could be miserable wherever you go. If you are truly “depressed and unmotivated” perhaps you should seek out help at the counseling center.