Atrophied mentioned games against marioton. and thsoe all bullet games.
Against him he clearly played badly. Below his rating.
Here is what Lichess mods say about it sandbagging: QOUTE>>
What is unclear about it?
I'll try to rephrase so that we are all on the same page. The only way you will get marked as a sandbagger is if you intentionally lose games. Berserking and shitty openings are allowed as long as you aren't losing the games on purpose.
Examples:
You get scholar's mated a number of games in row, and its clear you are aware of this trap = not cool
You resign every game after one move = not cool
You intentionally throw games to get a lower rating = not cool
You play the bongcloud a number of games where you lose the majority but you are trying to win = fine
You berserk every game in a tournament and lose a lot of rating, but you aren't losing on purpose = fine
You berserk and play the bongcloud and lose every game, but you played your best = fine
Edit: I should have also included
You are drunk and as a result you play worse (or better) = fine. << END QOUTE
>>You intentionally throw games to get a lower rating = not cool <<
Not sure how lichess knows about s/o's intention ? How does lichess know if s/o is drunk ?
If that is not the case, lichess read his private messages. (= not cool.)
There are coaches/people here ,who would share their bank accounts/ credit card/paypal besides etc.