ittf rules

So i was playing a casual match at my club. In this particular point, i got a lucky edge and raised my hand to say sorry (didnt verbally say sorry just did a hand raise) and my opponent managed to get the ball back and we played the point until i won that point. He said after the point ended it...

What do you think about limiting the maximum weight of rackets? It will give some much needed hope to defenders if the new formula was 180g or less.

In this match, the players are playing sets to seven points, without the need for a two-point advantage in case of a 6-6 score: Are there any new ITTF regulations that modify the traditional point-scoring system?

Let's say I want to bring 3 different setup, each with a spare (so six in total) to a single tournament. The plan is I want to change my racket before each match if I knew what my opponent setup is or who my opponent is. Is this allowed under ITTF rules? I know this is a silly question but I...