As usual when u somehow just miss a jackpot (for example u change machines and someone sits down where u were and hits the royal)-- console yourself with the fact that if u hadn't been doing exactly what u did u most likely wouldn't have hit or missed the same jackpot anyway. For example if u had taken a split second ore or less to press the max coin button instead of hitting the 1 coin button u would have had a slightly different random numb and not gotten that dealt royal.
But generally speaking to avoid the "oh noooooooo" -- just play max play at a level u can afford. If u only can afford quarters, just play 5 coins at 8/5 JB instead of 1coin on a $1 machine at 9/6 JB....the difference in what u lose for the non 4000 royal percentage wise makes up for some of of the difference in payable anyway, and u will be happier in the long run if u do hit the royal. So if $10 is too high, step down to a $1 or $2 machine or find a 3/5 line machine to get through more points.
And smile because u got that 2500$ royal, which u probably wouldnt have if u had played max bet.