You can get refunds on steam but only if the product doesnt work when it's supposed to.
IE, your specs meeting the requirements on the store page, but the game not working.
submit a support ticket,
you wont be refunded but you'll be reimbursed. you'll likley have money added to your Steam account wallet so you can buy something else.
if you arent willing to go the extra mile then it's your own fault and stop whining.