I have published my NFT contract on Rinkeby testnet and built, deployed, and published a subgraph in the graph network for Rinkeby network:

But I can't seem to find the subgraph on the Graph Explorer. How can I access the subgraph from the explorer?
For subgraphs indexing Rinkeby, there's a free
development query urlin The Graph studio you can use for testing. If you publish it to the network, you can't query it because it won't be indexed.