i still dont get how eth gas fees work
if i send some eth from coinbase to a metamask adress do i pay gas fee?
if i swap some token on uni i pay gas, ok but is it fixed or a percentage of the amount?
Usually the tx fee from the exchange will fixed, meaning you can not set it because the exchange that regulates it.
Transactions for swap tokens in uni gas fee will follow which means realtime, will change at any time can be cheaper but can be very expensive.