Rating

If your rating is really low (say 800), and you get better and you get to 1400 while barely losing any games, will that be flagged?

@learningchesskid3 If 1400 is the result of natural growth over time then I see no reason why you would be banned. However if you have been 800 rating for a while and all of a sudden start to win every single game and reach 1400... that might be a bit suspicious. Considering that Lichess pairs you with players of supposedly the same strenght should make it easy to see if your improvement is "magical" or just the result of hard work.

Ok thanks

You could be flagged as rating manipulator.

you mean right now or in the hypothetical situation