You want to kill yourself over some undergrad program? You have a lot of growing up to do. Go see how the world population is living. You are privileged for even having the opportunity to attend post-secondary.
Look, if it is not U of T, Waterloo, UBC, or McGill literally no one cares where you went for computer science/engineering. You can go work at Google now with a high school diploma. What really matters is the projects and skills you gain.
If you don't get into Ryerson go somewhere else. It isn't rocket science. There are 50+ universities in Canada offering comp sci programs. This isn't medical school we are talking about. There are people who dedicate many years to try to get into medicine, law, and dentistry and don't make it. Now they have a reason to be upset. You don't. You're a kid in high school attending school for free and can now apply to 50+ universities for a program that will directly lead you to a stable career right out of undergrad. Chill.