Wotcha and welcome, for your headlights try a tube of toothpaste that contains bicarb soda, arm & hammer type stuff. coat generously and leave for about 20 minutes then scrub off with an old toothbrush then rinse. One tube should do both headlights.
If that doesnt work then you are into a restoration kit (Halfords stock these) but you will need to apply a wax to stop it clouding again as you will have removed the UV protection layer during the restoration process