Being made to feel like I'm stupid because I'm shy.

[ItWnm]

Can anyone help me deal with this situation?

I work in an office of 8 people. I am known as the quiet one as I'm very shy and only tend to speak to people one to one.

I've worked there for over a decade but I'm frequently made to feel like I'm doing a lot wrong and making mistakes. Like I don't know what I'm doing.

They know I won't stand up to them so they treat me badly.

For example today the printer stopped working suddenly when I was printing something. Colleague came over to have a look and noticed a paper jam. I hadn't even had time to get to the printer to see for myself. They shouted over to me to make sure the printers not jammed next time and started explaining how to check it.
I know how to check the printer. I'm very good with technology. It made me embarrassed.

If someone has a question they will ask colleagues further away from me like I wouldn't know the answer.

Then someone I held the door open for decided to stand and chat to another colleague so I let the door go and I heard them tut and say that's rude.

It's other things too but it's getting to me. I want to say something to them but I can't as it's just not like me.

How can I make this stop?

I'm sorry OP, that sounds rubbish.
I'm shy too and been in similar situations before .
Hopefully other people will come along soon with some great suggestions!
I think sometimes when you've been in a work place for a long time you get pigeon holed and it's hard to get people took past their bias, and if one or two colleagues treat you in a certain way others can follow suit.
Are you happy at work? ? A fresh start may be just what you need!
I think you need to be a bit more assertive so for example with the printer I would say thanks, I was just coming I know how to clear the paper jam.
With the door I might smile and say I'll just go ahead and leave them holding the door.
Questions are more tricky as if they are going to someone else and you don't want to but in but if there's an opportunity you could offer your solution.
It maybe they don't want to bother you as you are quiet but if you think you ard being overlooked and patronised then I would start looking for a job where you are appreciated. You spend too many hours at work to spend it with people who are unkind. Not every office will be the same you may find an environment and colleagues that suit you much better.