Answer:
The lack of in-person activities has made it harder to build and sustain friendships, especially if you're a first year student. In other years, making friends happened organically as you'd meet people in a mix of social situations. Because of coronavirus, a more planned approach is required.
The routines help the social activities of students
1. I believe sentence (1) to be the objection.
2. Sentence (3) is a counter argument.
A metaphor for courage might be describing someone as having "the heart of a lion". He does not actually have the heart of a lion, it's a metaphor to show that he is courageous.
Try going to bed at a reasonable time.