For a story to stick with a reader, it has to have emotional impact. This can be one of the most difficult techniques to learn. In conversation, we will typically simply use an adverb but that usually won’t actually convey a sense of the emotion effectively.
Learn to render emotions as opposed to using a simple modifier. The best way to understand this technique is to think of the physical symptoms that accompany a given emotion. For example, compare the impact of “He fumed with anger” to “His eyes flashed daggers, fists tightening at his sides.” That will work whether or not its your viewpoint character. You’re simply noting what is observed.
If it’s your protagonist’s viewpoint, you can try something like: “His heart raced, fury surging through him like a fire storm.” This is more personal and wouldn’t be appropriate for a non-viewpoint character.
There are various books written on how to render emotion so that gives you some idea of what a challenge this can be. Yet it is a skill worth acquiring because when you make your reader feel something, they’re more likely to remember it and, by association, you as the author.