Sorry for your run of bad luck and get well soon.
I was close to buying a brooke recently that had water marks, glad I didn't know after hearing the water marks won't come out.
During my research I came across an old thread and someone had suggested a particular brand of saddle cleaner that her pal used on her Chanel.
It's call saphir saddle soap, I managed to find some on eBay, seems hard to come by as I think it's French
Would be good to see the results of whatever you use
Get well soon
Thanks I'll look into I have another bag not as dear I might try it on first and see how it turns out 😂