are there no other way to get resistant to mind affecting stuff?Sort of. There's a bit of a ritual involved.
It's called a Lich's Phylactry, and the ritual involves you dying.
Other than that though...
are there no other way to get resistant to mind affecting stuff?
do there exist a magical item which gives u immunity to mind affecting abilities?
If you bought this item, it would ever be referred to as the "Luigiana Purchase."
DMGII said:Effect: This ring protects the wearer against all mind-affecting spells and abilities as long as it is worn. She need not make any saving throws against these effects; they simply fail to affect her.