Is there anyway I can avoid paying GAS fee while uploading NFT in Opensea on Polygon blockchain?

I’m a newbie here, sorry if my question is too dumb.

I was following this tutorial to bulk upload NFT art in Opensea.

I was able to upload a collection of Images on testnet, but when I copy the contract on mainnnet, it is asking me to pay gas fee.

Polygon doesn’t have any gas fee when I manually upload NFTs in Opensea.

What’s the difference here or what am I missing?

it looks like you are trying to deploy a smart contract from remix, you have to pay gas fees to do that

@cryptokid Is there anyway I can generate smart contracts without having to pay gas fees?

I don’t know of a way to deploy a smart contract on mainnet without paying the gas fees