"I want to get a better grade and I feel that my work is not good enough"
The whole purpose of your assignment is for you to learn and gain some skills. Copy and paste do not contribute to any of those purposes. If you feel that you have problem with the quality of your work, consult your instructors or our research librarians.
"I am running out of time"
Yes, a bad time management and last minute works always put pressure to plagiarize. However, it is your own responsibility to manage and schedule your time to meet the deadline of your assignments.
"I did not know that it was plagiarism"
Again, it is your responsibility as a scholar to understand SMU Code of Academic Integrity. Ignorance does not excuse plagiarism.
"No one will find out"
First, the faculty are aware of the practices such as essay transactions, paper mill, etc. (they were once students too). Second, there are software and online services that specialize in detecting plagiarism. My advice: do not challenge them.
"Creativity is great, but plagiarism is faster"
“The principle goal of education is to create men who are capable of doing new things, not simply of repeating what other generations have done - men who are creative, inventive and discoverers.” - Jean Piaget =)