1996 Renault Clio Headlights

Electrical problem
1996 Renault Clio Manual

A year ago I passed my test and my father in law bought be a 1996 clio RT 1.4
Recently I have been having problems with my lights, To begin with my dipped lights came on fine when I turned it to head lighs sometimes came on and if I pulled the flash lever it turned my lights off.
But now my dipped lights come on, headlighs don't come on and flash does nothing but occasionally my headlights will flash every 15 seconds.
I've checked fuses and bulbs. I don't really know much about cars, so I have no idea what a relay is or whatever it's called.