yes, delivering check mate is the goal of chess. And when your opponent knows that too, seldom will your opponent overlook such a huge threat when way ahead in material !
Better is try to improve your overall positional and tactical skills to outplay your opponents. When the position favors you, your opponent will not be able to defend your mating threats.
Otherwise will it satisfy you for this fantasy to come true in 1 in 10 or more games, while suffering defeat in the rest ?
My fantasy is to successfully execute this trick every time I play.
The game