Will My Condition Of Sour Liquid And Undigested Food In My Mouth Ever Improve, Or Will I Need To Rely On Antacids Long-term?

I used to get this sour liquid in my mouth around August in 2020, so i went to see a doctor and he put me on antacids and after that I ve seen multiple doctors and they ve prescribed me different antacids. But as soon i get off them, even for a day, the sour liquid comes up. Sometimes, i also get some undigested food in my mouth. May i know, if my body will ever get over this condition or will i have to rely on the antacids for the lifetime.