There is no one correct way to give a talk. But there are many wrong ways.
The most important thing is to engage your audience in a compelling story. The story can be about pretty much anything, from particle physics to relationship advice. But there needs to be a story.
Too many people get up in front of a group of people and just recite something to the effect that “I did this.” Then they wonder why everyone in the audience is staring at their phone.
It’s your responsibility as a speaker to set up a problem that catches the audience’s attention, and then proceed to work through that problem with them, engaging their minds with the search for possible solutions. They need to feel involve in that process.
This is true whether you are discussing particle physics or relationship advice. Especially if you are discussing particle physics or relationship advice.