I had awful issues with gallstones before having my gallbladder out some years back now. Like Togo said, I'd be very wary of any symptoms which might suggest an infection.
When I still had my gallbladder, I had what seemed like either really bad food poisoning or a stomach bug, a lot of pain, vomiting and diarrhea and felt absolutely awful. A friend came up to check on me and bring me some supplies, phoned 111 when she saw the state of me and I ended up in hospital with acute cholecystitis.
I've had some issues since. I had a MRCP scan about 18 months ago. They didn't see any gallstones, mentioned something vaguely about a sphincter issue and that was that really. It was an appointment at a private hospital on the NHS so he after the scan didn't show anything like gallstones, he said he couldn't do anything further under his remit. Keep meaning to try and follow up at my usual hospital but had other things to deal with, then Covid.
Diet wise, I had more issues when I still had my gallbladder and had to go on a very low fat diet. It's quite illuminating when you start checking labels for fat content! I pretty much lived on ham salad sandwiches and wafer thing turkey and salad wraps, with porridge and fruit for breakfast. I have to say, one of the most effective diets I've been on, pain is a big incentive!
So if fat could be aggravating you, things like pork pie and sausage rolls would fit as they are very high in fat. I found avoiding larger meals helped and eating slowly.
Liver wise, as well as being linked to this issue, I apologise if I'm remembering incorrectly and thinking of someone else, but do you have RA? If so, I was wondering about what kind of meds you are on, in case they are ones which could cause liver issues and could maybe make things worse if there is something else causing liver issues. Also, in case you are on any medication which suppresses your immune system.