If you see “NOT ENOUGH NATIVE FOR GAS”, it means you don’t have enough gas tokens on source chain to complete the transaction.
Check how much gas you need for the transaction. (See details here.)
Check how much gas tokens you have in your source wallet. You need to add more gas tokens in your source wallet in order to complete the transaction.
Total gas cost (including source gas and destination gas) is deducted from source wallet. You don’t need to have gas tokens on destination chain to complete the transaction but you may need some APT on Aptos to claim the asset if you bridge the asset to Aptos for the first time.