The fee is charged on top, so You receive is the full amount you entered.
Networks with a FALKR withdrawal fee: you see the FALKR withdrawal fee, the Total deducted (the amount plus that fee) and You receive. By confirming, you accept exactly that fee. FALKR pays the blockchain network cost itself, so nothing else is charged and nothing is returned when the withdrawal completes. If the fee changes before you confirm, you are asked to review the withdrawal again and nothing is reserved. If network costs are unusually high at that moment, withdrawals on that network are temporarily unavailable and nothing is reserved.
Networks without a FALKR withdrawal fee: the FALKR withdrawal fee is 0 and you pay only the actual cost of the blockchain transfer, converted to the asset you withdraw. You see the Estimated network fee and the Maximum network fee. By confirming, you agree to pay up to that maximum and never more. The Maximum reserved line shows the amount plus that maximum, which is set aside from your available balance. When the withdrawal completes, you are charged the actual network cost, up to your maximum, and the unused part returns to your available balance.
If a withdrawal is rejected or fails, everything set aside for it returns to your available balance. Fees are shown in the asset you withdraw, and you don't need TRX in your FALKR account to withdraw USDT on TRON.