am i heavyweight or is there smth wrong with me

why whenever i drink alcohol wether its vodka whiskey whatever kind i usually overdo it and drink like 1L of 40% vodka in one night and i feel drunk slurred speech etc but its not crazy drunk, its just normal drunk. i only ever blacked out once and thats when i had like 15 drinks in a row on an empty stomach but i’m still like ok and i feel like i’m just immune or somethings wrong with me i never have hangovers like if i take 6 shots its almost the same as drinking a full bottle of vodka, i usually chase it with a little bit of chasers not much lol

for age context im 18 and i’m a female