I’m not sure if the Dragon’s Lair emulation in Mame ever worked - I think Daphne http://www.daphne-emu.com/site3/index_low.php is the go-to for that one.

Unfortunately the laser disc games didn’t really withstand the test if time between defects in the media and the general failure rates of the consumer quality electronics inside them. Emulation seems to be the only way to enjoy them now. I’ve not seen a working cabinet in many years.