god youre so stupid. first of all ISIS will light your dumbass on fire for being a westerner and having zero knowledge of islam. theyll take you for a spy.
second of all if you cant get a gun with money then get one without it. ie illegally. steal one. or join the drug trade and buy one when you make contacts.
but youre so fucking stupid and retarded i doubt youcouldmake it work and i 100% youve never even shot a gun before which is another reason ISIS will burn your ass.
go for it bud. just get a 1 way ticket to syria and ask around its super easy