How to calm my alcohol consuption without quitting

I’m 18, I live in France and I have a new friend group that goes to the bar every thursday (with my former group we drank more but less often and at our houses). I usually bring my own alcohol and drink a lot, I always don’t remember clearly the end of the night. Loosing control is not a very big problem but I want to try to remember stuff lmao and I hate the morning after, the hangover and all. I want to slow down a little but I don’t know how, because I i bring less alcohol, I will spend a lot of money at the bar to have more and if I bring more I will just drink more.

Thank you for your advice and sorry if my english sounds weird !!