If you're looking for the correct spelling of "fluckier" but can't seem to find it, consider alternatives like "luckier" or "pluckier". These words convey a similar meaning and sound closer to what you might be searching for.
Flukier Despite the odds being stacked against them, the team managed to score a flukier goal in the final seconds of the game, leading them to victory.
Luckier I consider myself luckier than most, as I won the lottery twice in a row.
Pluckier
Despite being outnumbered, the pluckier team never backed down and fought their way to victory.