What are 4 conflict event events in harry potter put it in 1 teen sentences separately

1. Harry Potter and Draco Malfoy engage in a heated duel during a Quidditch match, leading to a clash between Gryffindor and Slytherin.

2. Hermione Granger confronts Ron Weasley after he insults her intelligence, causing a temporary rift between their friendship.
3. Harry Potter faces Lord Voldemort in a fierce battle, testing their strength and determination to overcome each other.
4. Severus Snape and Sirius Black engage in a volatile confrontation, fueled by their long-standing animosity and conflicting loyalties.