Making sure readers actually care what happens to your main character is integral to any story. You can’t just take it for granted that just because your story has stuff happen to a guy that the reader will automatically be interested.
If your story happens to be about a noble main character who has exciting adventures this is less of a worry since this is the basic story archetype from fairy tales and myths, but not all stories follow this template.
While the simplest way to endear your MC to the reader is to demonstrate their general decency, what’s sometimes referred to as a pat the dog or save the cat moment—the MC goes out of their way to be helpful to some innocent in trouble and their good guy credentials are confirmed—not all main characters are straight out of a Disney family movie.
Fortunately there are a number of other ways to boost your hero’s general appeal.