Do unto others as you would have others do unto you; says the Bible.
How often have you experienced this for yourself? As a new member of a team, you are friendly with the others, go out of the way to meet and get to know them and you find they in turn respond positively to you and soon make you truly feel part of the team. The converse is also true.
If as a new member of the team, you are aloof and keep to yourself, without making the effort to make friends, you will soon finds that no one responds positively to you either.