Is it normal to not be able to mask anymore the older you get?

As I get older I am feeling more and more like my age and my mind are not in sync. I have never actually felt my age to be honest but I was able to somewhat get by. Now I’m overwhelmed almost all the time and I find that other people can sense I am acting strange. I genuinely don’t know anymore how to interact with others and it almost feels like I’m becoming more immature.

To be honest even as a child and teenager people could tell something as weird about me but as an adult it feels like now I can’t make friends or relate to people anymore. People younger than me feel more like “real “ adults than me. It always feels like I’m only scraping the surface of most situations.

TLDR: I’m regressing and I don’t know how to act anymore and was wondering if this is a normal thing for autistic folks.