Insight on IBS-M ?

Hello, I have been dealing with IBS-M since I was thirteen years old I'm in my late teens now. I was wondering if the symptoms get better as you get older?
My symptoms have always been extremely stress related and I developed a lot of food fear when I first had symptoms until I realised the main cause.
I have been on immodiums, anti- acids, pepto- bismol. I have also tried cutting out my triggering food group too but all to no avail.
I was just wondering if anyone related to my experience or had any advice for the future with this condition, especially because I know not a lot of people deal with IBS- M at my age.

Thank you!