What do you guys struggle with when working in an office environment?

I've never told an employer that I'm autistic because I don't want to be seen differently but I always struggle with the same things. I also have generalised anxiety and social anxiety that are probably caused by the autism and I'm prone to depressive episodes.

I always end up being isolated and known as the quiet/shy one in the office. Initially when I first start a job for the first few weeks/months I mask and put on a much more sociable act. But this becomes exhausting quite quickly and I start looking for ways I can avoid everyone without even realising it. I think people see me as the weird one who hides away upstairs and me thinking this makes me feel even more awkward.

When I do socialise I sort of act like a robot most of the time, most of my personality is an act and I'm just dying to run away the entire time. I also don't really find idle chit chat in office environments interesting at all and get extremely bored. I have different interests that people don't often share.

I tend to switch jobs every 1-2 years because of these reasons so I'm thinking of making it open in my current company so that I'm understood a bit better but I really don't know now if I suit the office environment at all and if I'd be better off doing another type of work