Do you think people (including ourselves) are judgmental? If yes, how do you think we can become less judgmental?

I think its ingrained our nature to be judgmental, as well an asset to our survival to be capable of making intelligent judgments. I would suggest that someone who doesn't make any judgments isn't doing much thinking. Many issues arise, IMO, when people expose or impose their uninvited judgments onto others. We should steer away from allowing ourselves to be controlled by the views of other people, but thoughtful constructive criticism, call it coaching, can be invaluable at times.

To the second question, I'd say practicing polite discretion in communicating our judgments would be far more reasonable than denying our nature and our need to render judgment. 

I know you clarified your question under your comment to the Z, but the following is still meaningful:

Aristotle said the human mind is a machine for coming to
conclusions, so in a sense, we are judgmental by nature.  That’s just how we work. 

I would suggest that we be more aware that the judgments
that we come to and express will fall into one of two categories---opinions and
statement s of fact.

Ideally, they should fall into both, unless they are
specifically and / or can be obviously designated as “opinions.”

Hatred judgemental No.

me, having bad social anxiety, i think everyone is judgemnetal towards me in a negtive way even if it might not be true.