Wow connection might have gone loose. It higher beam filament in bulb might have fused.
Sounds normal. Adjust tappets and ensure no leak before and after the pipe they connect carb to engine and air filter.
Check of oil flow is good to head by removing that inlet tappat cover and slowly rev the bike. Oil taiz dhar ma ana chahia. If ok nothing to worry. Just use good engine oil. Try some semi synthetic 20w50 oil.
Check for any loose nuts esp head nuts.