Could someone please tell me,, how can someone get over 4000 coins in the..

Controlling powerups! You must get rid of keys first then use up all powerups. Dont accept powerup or key gifts. This takes time but after theyre gone you start accepting them in small increments...play in regular rooms to get rid of chests and coins if instant or double star or 2x comes up don't use it. When you have just instants 2xs and double stars left GO to the tourney roomif you run out by like the 3rd game of tourney, stop, go accept a few more (or buy),weed out the chests again and go back to the tourney...having one or two coins is ok because with the 2xs it ups coin score plus they cover a couple with coins when you first get you're cards. I played for two years before figuring this out..it took almost a month to get rid of the over 1k powerups and keys..but since I have gotten all 3 red jewels for tourney crowns