It's not a strategy rather a belief and there's no way that anyone can prove they won because they purchased lottery that has been already sold, I would not do that but if they see it's a way then just go ahead but don't be disappointed when you didn't win anything. Lottery is the most lowest odds to win of all kinds of games in Gambling, if you're lucky you will win no matter what, recently I shared a story when someone won a car in scratch card and when interviewer asked them to recreate how he purchased then he won 250K again which is called luck that can't be bought anywhere.