I saw the movie, but I still have some questions

I saw the movie recently, as it just launched in my country, and I really liked it. I felt it was a bit short, but I take what I can get and won't complain about it. Now I do have some questions, and I would need your answers. The questions are not necessarily in order, though, and no need to worry about spoilers with me.

• Did the movie skip content? I really needed the movie to take it a little slower with their romance and stay in that moment a little longer. It felt a bit rushed, or maybe I'm just longing for the S1 direction and pace.
• Why did Reze start to laugh when she first met Denji? Is it because she couldn't believe her eyes that she found him so randomly and easily?
• Did Reze play the defenseless schoolgirl with that killer in order to lure him away from Denji so she wouldn't blow her cover?
• Why did she make that rough face where her eye was twitching during the conversation with that killer? Did the guy say something that triggered her, or what was that about?
• Was the Shark guy overly friendly with Denji not because he sees him as a friend, but because Makima forced him to watch Denji and protect him, so he's overly attached to Denji out of fear of Makima's wrath?
• After Reze is rescued and all three of them are on the beach, did Denji make a fatal mistake (that led to Reze being dismembered in that alley) by telling Reze where to meet him and at what time while the Shark guy heard that and told Makima later because he was her lapdog?
• What's the deal with the angel guy? If he's so strong, how was he captured? How is he enslaved? How did Makima defeat him in the first place?