I have the same problem, and who will make a project that can change all tokens to ETH in one transaction by SWAP will be the hero of millions!
How hard can it be?
How does Binance have the option to exchange all tokens for BNB.
Every advanced platform network has partners in this and also in swaps, because between the swap exchanges supported by ETH and the swap exchanges supported by BNB, they are very different and you will never find similarities in them, even though in terms of advantages and disadvantages you can still find in both.