Is getting depressed from alcohol normal?

I’m a Finnish 18yr old. I’ve been drinking casually since 15. I rarely get drunk (once every 1-2 months or so, mostly some important parties like weddings or such) since I hate hangovers so much that I take extreme care to make sure I’m in tip top shape before I go to sleep.

I consider myself pretty content on everything in my life. I do confess that I’m pretty melancholic most of the time but I feel indifferent about it. I have a good reputation in my neighbourhood and I’m a respected and liked person in my peers and friends. Yet still everytime I even take one sippy of alcohol now, I get madly depressed.

At first around 15-17 alcohol opened me up and made me more happy at the moment. I only have positive experiences with alcohol around that time but recently the only thing I feel when I take even one sip is just cripplingly depressed. It’s gotten to the point that my friends and peers have noticed it and let me go home whenever I wish.

Now, it wouldn’t bother me as much if I just didn’t love the taste of beer so much. This weird ass condition of mine makes it a huge ass chore to even function normally everytime whenever I take a sip of alcohol.

Am I lonely on this? My peers only party harder with alcohol while I nearly stop partying after 1-2 drinks.

What can I do about this?

I have a lot of alcoholics in my family tree yet my parents don’t suffer from these effects at all.