How can I cure dijestion issues and bloating in stomach?

I have dijestion issues and I was given sulfacrate it dissolves in water and is purple and I notice when I drink it my stomach starts to feel hungry but before that I am bloated a lot after I eat but after I take it I get instantly hungry. How come? I eat anything and confused why I have dijestion issues. It sucks I notice light foods go well for me like eggs avacado tea light things are only things that make me feel fine.
Updates
+1 y
But what can I do to gain weight? I can’t even be 100 lbs I’m stuck at 86
How can I cure dijestion issues and bloating in stomach?
Post Opinion