Again i have around 2000 dollars in altcoin right now and around 8 dollars in btc and 5 dollars in bnb in my binance account. And i want to know the most cost effective way to withdraw it to my nano ledger.
Such as sell altcoin and bnb for btc and withdraw btc and pay that fee? Or sell altcoin for btc. Then sell all that btc for usdt/usdc and send that to nano ledger.
Mate I gave you the fees page. You can just compare, and just decide which coins you prefer holding. This is going to be more of a "which coin do you prefer buying" than a fee problem as you can clearly see all the fees on the page I provided.
Here is the other thing. If i have usdt/usdc on the tron network... what if i cant sell that in the future?
I only have access to coinbase/gemini and apparently these two exchanges which has usdt/usdc only is on ETH chain? So i cant in the future sell the usdt/usdc that is on the tron chain?
You can still send it back to an exchange in the future even on the Tron/BSC chain. It's just that most exchanges accept Ethereum blockchain only so you might have a bit of trouble finding good ones, but there are others if you look.