I have autism and bipolar 1.
Autism does not have pills.
Circumstances of your birth have no causation to autism. Neither to circumstances of your life. All sorts of people have autism from all walks of life.
A reason to research and understand one’s own autism is to recognize what in your life overwhelms you, and how to structure your life in a way that is comfortable and functional to you, without a judgemental neurotypical lens. To embrace who you are, rather than try to force yourself to be something you are not.
You can seek a diagnosis if you wish, but I can’t tell you if it’d give you what you’re looking for.
I learned about my conditions through following various mental health communities for years and seeing what had commonalities with me through the fun lens of dank memes. I also learned a lot about medications, warning signs in therapists, and I learned what mental health conditions I don’t have. Can’t say if that’d work for everyone, either, but I did learn a lot more from the communities directly rather than reading the clinical book definitions.
To add to your statement, irritability is also a very common expression of bipolar.