I tried this but it don't work

on *:quit:#: {
%rand $r(1,5) {
if (%rand == 1) { msg $chan $nick, see ya later $nick }
if (%rand == 2) { msg $chan $nick, good bye $nick }
if (%rand == 3) { msg $chan $nick, Wait Come Back $nick I not done talking to you }
if (%rand == 4) { msg $chan $nick, come back soon $nick ? }
if (%rand == 5) { msg $chan $nick, cya $nick }
}
}

on *:QUIT:#: {
  /set %lel $rand(1,3)
  if (%lel == 1) msg $chan Very dank quit msg.
  if (%lel == 2) msg $chan Super dank quit msg.
  if (%lel == 3) msg $chan Dankest quit msg.
}

this works ?

dont work

change first line to On $*:QUIT: {

You may also want to set a variable for $chan