Hi is there any way of fixing the hiatus hernia without operation done ?

Most likely: Most of hiatus hernias are sliding type , only rarer para esophageal hernias needs surgery as they can incarcerate , surgery is for gerd not for hernia , ( or the acid reflux), most of the time possible to control with by diet, early supper, not over filling the stomach , elevation of head while sleeping, and protan inhibitors to reduce acid out put , try this first