Sour/Acidic Shot No Matter What? [Breville Bambino/or grinder]

Hello! I recently switched to another dark roast coffee bean just to try it out but every shot has been sour, acidic, and thin. I am using the 1Zpresso J Ultra with Breville Bambino. The first bag of beans wasn't like this. I was able to dial in and reach a bold flavor of my liking. Is it possible that it's the beans? I purchased them within the recommended 1-2 week roast range and froze them until I was ready to use so they should be fresh.

I've hit the 1:2 ratio in ~ 25 seconds with 16g and it was sour.

I thought maybe I was under dosing the basket so I increased to 18g with same grind settings and also 1:2 ratio, but it took over a minute to extract. It started coming out like syrup but then it stalled as it became drips. To my surprise, this was also sour and acidic. If it took that long to extract, shouldn't it be bitter and over extracted?

Should I keep at 18g and make the grind settings more coarse? It seemed to fill the basket better at 18g, but getting a sour shot with a 1 minute extraction time doesn't make sense to me.

Any help is appreciated!