It’s hard to get drunk

So Ive been getting into drinking lately, but it’s hard to get drunk. Like I can down a glass of 40% rum and only be a little awkward for mabye an hour at best. But I still have most of my motor function.

I don’t drink often, which is why I don’t understand why I need such strong alcohol. Chugging 4 beers at once only gets me a little drunk I really don’t understand why.

Any advice on good alcohol I can buy that will work with my high metabolism.

I’m 18 6ft and 180lbs. What’s an appropriate amount to drink.