Some people are obeying the rules but others are just disobeying the rules. It can come across as an offence to those who are harmed by the situation or who have had previous close friends or families who have been affected. Obeying the rules is defiantly essential as this current situation we are in spreads rapidly and if we disobey the government, many people may face consequences as well as risking other people's life's.
"After we left practice" is a dependent clause that isn't a full sentence on its own, and "I went swimming" and "Mark ran around the track" are two independent clauses linked by a conjunction
The crystal merchant recognizes his own negativity and lack of motivation, but he appears willing to change his situation with the help of a stranger such as Santiago