This isn't your typical advice, but this is how I fall in love with opening chapters:

-Introduce the world. This may seem counter-intuitive. Everyone says to start with conflict, and you should, but conflict and world can be intertwined.

In Mistborn, chapter 1 introduces a plantation in Scadrial. You don't meet the main character until the end of the chapter, but you taste the ash in the sky, you see the people who we're invested in saving and who we're invested in destroying. The stakes of the world are set up.

In The Poppy War, chapter 1 opens with a student taking a test. To take it, she is forced to strip naked and follow lots of rules in order to prevent cheating. We get that this world values education, it's highly regimented, very strict, and the MC is on the back foot.

You don't necessarily need an explosion. You don't necessarily need quippy, clever one-liners. But you do need a world that sets up the stakes and that your character can either fight against or conform to.

Next rule of opening chapters:

- You need to make me FEEL something.

Hooking someone with an interesting plot will get you a book sale, but hooking someone in with an interesting emotion will get you a fan for life.

It could be triumph. It could be sadness or longing or fear. It could be multiple emotions over the course of the first chapter, but they should be strong, they should be tangible. Those feelings should punch you in the gut.

The Fifth Season's opening chapter is masterful at this. In it, a young girl is betrayed by her parents but also loves them. Is fearful of her captor at first, then trusting of him, then betrayed by him. Ur expectations are shattered and you feel confusion, fear, hurt, curiosity

The Poppy War (because I've read it most recently) made me feel stress and determination. It made me laugh out loud, and then gave me a moment of triumph to stand on at the end. That chapter took my feelings and shook them all over the floor.

As @tobiasbuckell said in my mentions: "memorable books often introduce a conflict, element of character, and world all at once."

https://twitter.com/tobiasbuckell/status/998610135982530560

A mini master class in this: emotion + worldbuilding + conflict is the opening paragraph of Old Man's War:

"I did two things on my seventy-fifth birthday. I visited my wife's grave. Then I joined the army."

in these three sentences you get:

World - this is a place where you join the army at 75. Why?

Emotion - the wife's grave gives you nostalgia and sadness. That he joins the army after visiting adds a feeling like desperation, a yearning to detach.

Character: This is the kind of person who was married, who cared for his wife, and the kind that would join the army at 75.

Conflict: They're doing this drastic measure as a means to get over their wife's death. Will they? What will the army be like for them at this age?

Give me a world to sink into, emotions to feel strongly, (conflict and character too) and your book will already be better than half the books I read.