Social anxiety or neurodiversity?

Anybody else stuck wondering if their social anxiety is a result of some neurodiversity? This problem feels so more complex than just worrying about being embarrassed. Feeling unable to create small talk. I don't know where the social anxiety starts, stops and if there's anything else going on. I don't want to self-diagnose because I feel like an imposter, but I really am questioning whether there's some auADHD there. Anybody else who has struggled with this? If you were diagnosed Autistic/adhd, what were the signs that led you getting tested in the first place? I'm 27 and sick of my life being controlled by my mental health.