Indigestion issues. Some which help me!

My age is 37, no any bp or diabetes, weight is normal, I am pure veg person, from back one year I am facing gastric, acidity and digestive issues I meet gastronologist, done colono, endoscopy, stoll culture and lot of tests, all reports r very normal I feel all d time heavy ness in stomach, food not properly digest, daily mrng I need to have a cyra d bfr breakfast otherwise I feel like wanting after food, lot of floating, beaches and some times gas release with very bad smell, if I am taking vitazymne capsule after lunch then no any bad smell in d time of gas relase or esle worst Some times rounds in stomach, feel to go for stoll but not happening, just mrng one time that too normal but need to sit a lot time in washroom and after breakfast again to wash room, feel to go again and again but not happy there also , I don't eat even spicy or out side food much, no any alcohol habits, occasionally I smoke Kindly suggest some which help me