I have autism + low IQ....is university possible for me? Please help

Hello everyone, I hope you're all doing well. :)

Over the past few weeks, I've been plagued by this overwhelming fear that I'm stupid and intellectually disabled simply because I'm autistic, and I've read that around 50% of autistic people have an intellectual disability. I'm genuinely convinced that I'm one of them. I have no doubt about it. I just feel stupid and constantly make mistakes with simple tasks wherever I go. Everything feels ten times harder for me. On top of that, I feel like I speak in a way that makes me sound unintelligent, or at least that's how I think other people perceive me. I can't even tie my shoelaces.

At the same time, I've actually done well academically. I earned top grades (the equivalent of an A+) in four engineering mathematics exams at a technical university. In Engineering Mechanics III (Dynamics), I even received the only top grade in the class, making me the highest-performing student. That means I likely outperformed many STEM students who probably have IQs around 120.

Despite all of that, I still feel stupid when it comes to everyday tasks, no matter how hard I try.

What should I do, everyone? Are there vocational training programs for people with intellectual disabilities? What do people with intellectual disabilities usually do in life? Are there any vocational training or career paths specifically designed for autistic people?