How can I convert binance chain assets (BEP2/20) to regular BTC without enough BNB to cover the network fee?

I have some money (not much anymore, sadly... lost about 75% of my investment due to bad timing/luck) in a few binance tokens (BEP20 BTCB, DOGE, ETH, and some BEP2 ETH). All I want to do is move it all to regular BTC coin - not binance chain tokens.

But unfortunately, I don't seem to have enough BNB to cover the measly few cents for the network fee to do anything right now, and I don't want to have to "top up" my BNB by $50 or more just to get the ≈$65 I have left in binance assets out of binance blockchain.

Is there some way I can do a swap from the BEP2/20 tokens to BTC coin and just use part of the amount I am swapping to BTC to cover the network fee?

I'm using Trust Wallet right now. Maybe there's another app/wallet/exchange where I can do this without losing even more money than I have already just to get stuff out of binance assets?

Thanks for any help resolving this!