Looking for someone that has tried alternatives medicine or treatment?

I am trying to find anyone on here that has tried any alternative approach? My dad was diagnosed in March 2025 and went through chemo and radiation. Scans and scope biopsy came back clear but Dr's still want to do surgrey. Wondering if anyone has done any other treatments that they feel has worked? Nobody seems to talk about natural or other treatments than what the Dr's recommend. Looking for experiences