Is there a way to get all the tokens with their traits in an NFT collection?

I know a contract has a baseURI with which we append a token ID to get the traits of that particular token id.

I was wondering: Is there a way I can get all the traits so I don't have to make like thousands of requests? I tried doing that for one NFT collection, but it didn't work.

I know there's the OpenSea API but that returns a limit of 50 tokens (with their traits) each call.