Trying alcohol for the first time

A few nights ago I tried alcohol for the first time ever, but not only one beer, one asahi super dry beer, two tequila cola, at least half a tequila and multiple sips from other people’s strong drinks (mix with energy drinks and shit) yet I couldn’t say I felt a damn thing during or after. Why you think is that? Note that i’m underweight so I thought I will be hammered with half a beer