I can see this is a pretty old post but I found it through a google search. Stuck, did you ever try the cleanse or find alternative options?
I felt/feel the same that you do. I was not interested in having the surgery and I felt/feel that if my God (or in your case Hashem?) put it there it was put there for a reason and I felt very badly that I had done something to cause this issue and that having it removed was ungrateful and selfish. Unfortunately, I was in absolute agony and it was recurring frequently and lasting longer.
Like others seem to be mentioning and like I’m imagining you’ve probably found out at the point that you are at the only real option is removal. People make mistakes and hopefully your religion offers forgiveness and redemption. Hopefully you are not in pain now and have found something that works for you whether it was surgery or something natural maybe that I wasn’t aware of.
After having my gallbladder removed by the way I’ve been fairly uncomfortable because it’s really obvious my body isn’t processing food like it was before. Loose and light colored stools and a general ickiness is how I feel. So yes, you can live without it but I think 99% of people under appreciate the gallbladder as it is a necessary organ and shouldn’t be removed lightly.