Homonym: tryhard (Overachiever)
"Tryhard" is a term often used in gaming and competitive contexts to describe someone who puts in excessive effort to win or succeed, sometimes to the point of being overly serious. This behavior can be seen as admirable by some, but it may also be viewed negatively by others who believe it detracts from the fun of the game.
In online communities, a tryhard might be criticized for prioritizing victory over enjoyment, leading to a tense atmosphere. The term can also apply outside of gaming, referring to individuals who are perceived as overly ambitious or competitive in various activities, such as sports or academics.