Failed transactions may occur due to insufficient funds, contract approval issues, or incorrect token settings. Before retrying:

• Ensure you have enough ETH/BNB for gas fees.
• This issue is usually due to wallet sync problems. To fix it:
  a. Clear your browser cache and refresh your wallet.
  b. Switch networks and then switch back.
  c. Check for blockchain delays. Sometimes transactions take time to reflect.
  
• If the problem continues, try using another device or network (Wi-Fi/mobile data).
• Try a different liquidity provider if the swap is failing due to insufficient liquidity.

If the issue persists, clear your browser cache and restart your wallet app.