I get drunk way too fast

For context I am 22(m), 155 lb, 5’11”.

I have noticed I always get drunk very quickly regardless of regularly drinking enough water and eating. I also don’t take any medication. Ever since I began drinking in high school, I noticed I always got way drunker than my friends and much quicker. It’s almost like I can take a single sip of beer and have a strong awareness of how it is starting to affect me if that makes sense, I can almost instantly feel it in my face/ eyes. My eyes also get very bloodshot and glossy when I drink compared to most people. I know that alcohol is supposed to do that, just feels like it affects me more than anyone else. I drink every weekend, sometimes more, so Id imagine I would have some sort of tolerance built up. I only got interested as to why this is when I recently went to a bar with my sister who is 23, 130 lb, 5’0”. We both drank 3 beers and there was a breathalyzer like test in the bar and I blew quite a bit higher than she did. We both were shocked.

Why could this be? Genetics? Or something else?