Just that you are not familiar with converting your bitcoin, if not you will have converted your bitcoin to TRX, Litecoin or USDT or even BNB and send to the recipient wallet. then the recipient should use it to buy bitcoin. So That is how it is done to reduce the network fee.
I don't think OP mentioned using exchange and even if he used exchange it's not like they won't collect fee while converting just that it's low compared to the amount he's paying as fee... If not exchange then all this won't work, OP just need to manage his UTXOS , probably importing his wallet to the one that can support what he needs...
The only way you can do it is by not trying to initiate the transaction atol or like I said you convert it and send via another coin. Another method. Is to us import your seed phrase into electrum wallet or any multisige wallet like blue wallet and reduce the sat/Vbite to the medium or small for fee transactions.
You mean multisig?? OP problem has nothing to do with multisig though importing his wallet into Electrum to use the coin control feature can help, OP just need to reduce the transaction size...