A contrarian.
A self-contradictory statement is called a paradox. It is a statement that contradicts itself or seems to defy logic.
A hypocrite is someone who pretends to have qualities or beliefs that they do not actually possess, often acting in a way that contradicts their stated values or beliefs.
You can call someone who is wise and has good sense as a sage or a wise person.
An opposing claim is an argument or assertion that contradicts or challenges the main claim or thesis put forth by someone else. It presents a different perspective or viewpoint on the issue being discussed.
Contradictory sentence. For instance, if you said you were going to the store, but then didn't go. You made a contradiction. Someone who always contradicts himself is what we call, a hypocrite!
Not always, no.
A loser
a stalker
Sociable
You call them a snotty jerk. They are also selfish!
germaphobe.
A Jonathan Stimson
An Electrician
A contrarian.
An Electrician
A nudist.