On ethereum, there is cowswap which allows some tokens to be swapped and fees be paid in token itself,
As I understand their point on
the FAQ page, it costs gas at least to sign the smart contract to execute any txs on your wallet. Except with your experience, you can explain that it really ddin't cut your ETH coins at all.
A while back I converted a token to eth, I didn't have any eth in wallet, and it went through with fee being paid in token I was swapping from.
The only solution is to get some trons first, you can ask for some trx loan in
this section.
I got it solved, check recent comments.