On platforms like FanDuel, which is a popular sports betting and daily fantasy sports provider, once a bet has been placed, it typically cannot be taken back or changed. This is standard practice for most sports betting platforms to ensure the integrity of the betting process.

However, FanDuel does offer certain features that might give users some flexibility:

1. **Cash Out:** FanDuel may offer a “Cash Out” feature on some bets, which allows bettors to settle their bet early for a reduced payout. This feature is not available on all bets and is typically offered at the discretion of the platform.

2. **Edit My Bet:** For some parlays, FanDuel has an “Edit My Bet” feature that allows bettors to change a leg of a parlay bet under certain conditions, such as before the start of an event or if one leg has already been decided.

It’s important to check the terms and conditions of your specific bet and the current offerings on the FanDuel platform. The availability of these features can change, and they may not apply to all types of bets.

If you’re looking to cancel or change a bet and these options are not available, you would need to contact FanDuel’s customer service for assistance, but it’s unlikely they will be able to take back a bet after it has been placed. Always remember to review your bets carefully before confirming them to avoid any unintended losses.