I've had gallbladder problems, though not quite what you described.
My question for you is, have you done a bowel cleanse? parasite cleanse, blood cleanse (in that order) before doing the flushes?
For some people, it is ok to go straight to the liver/GB flush, I didn't dare try given all that I read about possible nausea, getting sick and knowing the state of my GB. I've been having attacks since I was 15 (15plus years)
My main reason for starting all this cleansing was my gallbladder attacks and general frustration of not feeling well despite doing "everything right" or so I thought at the time.
I started with The Master Cleanse with just the intention to see if I could do and thought if I could get through the weekend then I would continue.
The recommended order of cleanse is bowel, parasite (I found this to be very important for me, though it scared and freaked me out at the time, I just didn't look to hard), blood cleanse (piece of cake), and then the liver/GB flushes.
When I was finally ready for the liver/GB flush, I had a mental issue with the Epsom Salt drink and OO/GF. Couldn't fathom ingesting either, but I think I was able to tolerate both, only because my system was ready for it.
You mention that you have taken all the stuff for the liver/GB health and have not improved, but you don't mention anything about cleansing preparation leading up to the flushes.
IMHO, it sounds like you're trying to do the flushes before you've done the prep work leading up to it. Kinda like trying to paint a house before cleaning and clearing out the grime/clutter/junk.
Don't give up yet, I know it's frustrating when you feel that you're doing everything right and it's not working. Sometimes it just takes a pause to step back and re-assess what's going on or what's missing from the picture. I know, I've been there.
Please keep us posted on how things turn out and what you decide.