Alcohol calories

So I drink an 8% beer and a normal beer when I drink. Both 24 ounces. Somehow according to their page this equals only 370 calories. I need to switch to a lighter calorie alcohol, as I really need to lose weight. Please no comments about cutting it out completely that isn’t going to happen. Can someone PLEASE do the math for me of how I could make a mixed drink be 8%? Using vodka and seltzer water. And how many ounces to stop at so I’m consuming the same amount of alcohol overall as before. Then how many calories this would be? I can’t seem to figure any of it out no matter how hard I try. I’m willing to spend money on a premade low cal 8% drink if you have any recs. But they all seem to somehow have more calories? And I can’t do liquor straight it gives me acid reflux where beer and mixed drinks don’t. 8%, low cal, whatever alcohol amount I’m normally consuming so I don’t drink too much. Someday make the math work please