I Feel Like a Failure Sometimes

Is it normal to feel like a failure? Yes I graduated but 3 or 4 years after when I was suppose to. It was suppose to be a bachelor's in CSCI but I failed one class 3 times and that was the limit so I had to drop to Interdisciplinary studies which basically means I pick my classes. So I did all math and computer science. Graduating with a 2.1 GPA even though I use to be a straight A student. I dont want to do the walk and I dont want an alumni shirt cause I dont feel like I earned it. 26 years old, should've graduated at 22. Went through spiraling depression and self hatred and procrastination which is why I'm in this sorry state. All in all, i wish I could go back and do it all over again