There's a much simpler solution if you want to make 6k instantly. Sign up to CZR with 2 different socials. Sign up bonus is currently at $3,300. Deposit 3k into each account. Place a $6,300 bet (an over/under bet that at a -110 return) on one account, hedge that bet from the 2nd account. One account will be left with $0, and one with 12k. That 6k profit right there.
Just make sure one of your bets isn't canceled right before the game for violating T&C. Especially if it's the winning one
IP, geolocation, bank, address, eta.
Also keep in mind the potential taxes on 9k in 'winnings'.