Could be craftabale from glass bottels filled with gasoline and rags.

Schould only be lightable with a lighter (not matches) because matches require two hands and one hand must be holding the molotov. (maybe light fuse option could only show when there is a usebale lighter in youre inventory)

The explosion radius could be 1m at max 1.5m. Should cause damage over time.

Fire could be extinguished by rolling on the floor

The damage shouldnt be leathel