Are these sentences correct?
1. I have been graduates since 2016. (Or I was a graduate in 2016).
2. I held a degree in arts in 2016.
3. I'm doing(taking) a master's degree in arts.
3. I did(took)a degree in arts in 2016.
4. I have a master's degree in arts.
5. I have a bachelor's degree in arts.
Are there any similar sentences to degree either about the past or present?
Thanks in advance.

