New to drinking- can’t get drunk. Help

Title sort of says it all. I had abstained from drinking for most of my life, even when I did turn 21. Well, with my partner, I’ve been trying to drink more. First time, slammed back 4 shots of Brandi. Nothing, no feeling other than the warm feeling of it traveling down. I’ve tried rum, vodka, tequila, wine, etc. I will even chug the drinks- not eat much- drink multiple “strong” drinks. Nothing, not tipsy. No compromise to my mental state or anything affecting it. I could still function. What’s going on? Anyone have any ideas?

For little extra context- I do get adjusted to medications quickly and they don’t always have the strength of the effect they should- but that’s usually my body getting use to it quickly- this was immediate