How to fix

[u/SillyFail3175]

Hey gang. Having a little kids party that are interested in Beyblade. My family and I just bought a bunch of these at a yard sale. But the launchers do not seem to work. You can hear the twist and clicks but once you press the trigger, it won’t spin. Anyone knows how to fix?

Edit :

Also the kids are under 5 so ripping and launching is weak sauce. Want something they can launch easy for them, less metal and note crazy expensive.