Are the Detroit Lions a cursed franchise like the Los Angeles Clippers and Chicago Cubs? why do they always?

keep losing? why do the Detroit Lions always suck? They have been a disaster for a little over half a century now ever since winning their last NFL Championship in 1957, since then they have only made the Playoffs 9 times, winning only 1 playoff game!!!!, can you believe that!?!?!, ONLY 1 PLAYOFF GAME THEY HAVE WON IN THE PAST 50 PLUS YEARS. In my opinion, they are worse than the Oakland Raiders, because at least the Raiders have won 3 Super Bowls.