Novelty in openings is important. If you play one opening over and over again you could possibly get bored with the game at the opening and not think throughout the rest of the game. Just look at this match here as an example:
Now look at this other game:
I played the King's Gambit, a rather uncommon opening and ended up winning with my knight and rooks.
So if you get the opportunity, learn new openings from Chess.com or another website. A real person would be best, but often that is not feasible. Openings like the King's Gambit for White, Sicilian and Scandinavian Defenses for Black are examples of new and different openings that can keep your chess games interesting.
Novelty in openings is important. If you play one opening over and over again you could possibly get bored with the game at the opening and not think throughout the rest of the game. Just look at this match here as an example: