How to send back erc20 BUSD
Hi guys,
I have sent 200 BUSD from binance smart chain using a bridge to ETH mainnest at the cost of approx 10$. Now I would like to revert it back but I don’t have eth for gas fees 
I cannot even buy ETH on uniswap because i would need to approve BUSD as pair and that costs ETH.
Would be buying ETH on example binance, transfer to METAMASK and with bridge move back the only way? That would be probably 50$.
If thats the only way how to minimize the costs?
Is it possible to pay gas fees with busd?