i can’t get drunk?

basically i can drink as much as i want but i genuinely cannot seem to get drunk. i don’t drink often so i don’t have a high tolerance, the only time i was able to get drunk was when i was 16 and drank a full bottle of Malibu rum. i drank half a bottle of brandy last night as-well as a bottle of wine and i was not drunk at all, I’ve done a lot of drugs so i don’t know wether its because ive done hard drugs that it’s made me have a high tolerance to alcohol but i don’t think that would make sense. genuinely have no clue on what to do, i don’t understand it lol!