Can’t you even do this sort of trade in the metamask wallet? Fees might be high but I imagine they will be nothing compared to what you’ll lose buying pepe coin. Plus, if metamask ever does an airdrop maybe you’ll qualify for using their in wallet exchange. I imagine sites like Uniswap or whatever people are using nowadays would work also.
He can do the swap using Metamask but I think he's doing this because of the high fees that he can't bear.
It will still require him to pay such fees and thus, he's looking for an alternative. @OP, it's still needed to pay some fee if this is the solution that you're trying to find.
But check it out eventually later if the fees have dropped down, I guess that we're starting to see the drop of the fees.