For years now, I noticed that my 3rd pov narroration sounds somber, or have a somber undertone. Very great for writing horror, but not great for everything else.
Is there any tips to make my writing sound happy or at least removing the somber tone?
As
@KuruKinaar has said, there are several types of narrators that can be used. There is a problem I would like you to consider, however: to change narration style mid-story is jarring. Changing narrator style is also not so simple as it might appear. It involves changing the perspective the story is told by.
A first-person narrator is someone who is inside the story. They do not know what is happening everywhere, for if they know, they are some sort of god. Also, they are subjective to their own opinions of matters, and therefore, they cannot tell impartial facts.
As for third-person narrators, there are different types as well. You have the omniscient narrator, who is actually the God-Writer. You have the objective, impersonal one, who might sound like an omniscient, but does not actually know it all. You also can be a subjective narrator, and be a third-person telling a story.
You can also have a narrator who talks in second person, as if placing the readers inside the story, but this is probably one that writers do not use often, and for a reason. It requires much consideration on how to use it right.
But do understand that changing narrator types is not something you should do without careful planning. Just imagine you are watching a match of football from the standings, and then suddenly you are placed inside the field. Or instead, you are now placed in the M.C.s seat and you have to narrate the match itself.
A much softer approach would be for you just modulating the kind of words you use as a narrator instead, try to bring your reader to be more emotionally involved with the story. This way, you would not disrupt the flow of an ongoing narrative. However, if you are going to start a new story, it is always interesting to experiment with new ways of portraying the story.