Easier way of transacting ETH for any other coin on trust wallet

Having used uni swap to exchange eth for a coin with the max option as the gas fees are just stupid. After paying gas fee and transferring the coin I can see there is still $20 of eth left over . Absolute waste of a transaction. can honestly say I’m sick to death of Etherum as it’s just stolen $20 of transaction I can’t use. Very disappointed with this system