Halogens are elements of group of the periodic table.
These elements are Fluorine, Chlorine, Bromine, Iodine, and Astatineand Tennessine.
They are very reactive so they do not found in nature in elemental form.
Fluorine and Chlorine are abundantly found in the earth's crust and Astatine and Tennessine is the rarest naturally occurring element and generally do not found in nature.
Bromine and Iodine can not be found easily and are also rare.
Halogens are generally found in minerals and salts.
For example, Fluorite, Sodium chloride, etc.
Halogens are used in sanitation, plum, paper, pharmaceuticals, etc.
Hence, halogens are generally found in minerals and salts.