Making your own sesame oil at home is easier than I thought, but the yield is small, so you would need a LOT of seeds to make a decent amount of pure oil. Alternately, you can make a sesame oil blend with a neutral flavored oil, such as peanut, but that has a slightly different methodology than what we are about to get into here.
Find it online: https://thecoconutmama.com/how-to-make-homemade-sesame-oil/