https://www.chess.com/forum/view/general/do-you-also-hate-this-player
Do you also like this player?

LOL, getting rid of the insults and bragging after games, I'm exactly the player who wants to keep rematching until I lose a game, and vice versa against stronger players.

You call your opponent names or insults after you loose to him. Your opponent won't be happy until he/she looses to you. When you do win (after beating him/her at least 10 times in a row), the opponent acts like he/she is so great.
I hate those people. I have learned to never accept a rematch.

I play a rematch if I beat them otherwise I don't for players that have a similar rating to mine or I lost (they just want to steal your points)

Reminds me the story of an ancient GM who was constantly getting challenged by a much lower level player. They always played for money and the GM crushed him over and over and over again.
One day the GM decided to let him win, so the guy do not lose hope and keep betting his money.
The lower rated player "won" and then said "Oh! I finally defeated this guy" (I think it was Steinitz) and never ever challenged him again.
You call your opponent names or insults after you loose to him. Your opponent won't be happy until he/she looses to you. When you do win (after beating him/her at least 10 times in a row), the opponent acts like he/she is so great.