For a sunrise shot on a phone, the biggest issue is usually camera shake in low light. The most effective improvement is to keep the phone as still as possible when the photo is taken.

Try resting the phone on something solid like a wall, fence, or other stable surface. If your phone has a timer or delay mode, use it so you’re not touching the phone at the moment of exposure.

If you can’t rest it on anything, stabilize yourself instead: lean against a wall, tree, or fence, keep your elbows tucked tightly into your body, hold the phone close and steady, and pause your breathing as you take the shot.

With phone cameras, especially in low light, good stability often matters more than anything else. Start there before worrying about more advanced settings or editing.