Need Help Accessing MetaMask Account

Hello fellow Ethereans, first off apologies I need help as I'm an experienced DeFi user but even people like me make mistakes.

Situation: I was part of an NFT drop, but it was for a music artist so I wasn't able to mint directly to my Ethereum main account. It was a weird drop in that I had to use a different company to claim the mint and essentially I ended up with NFTs on Polygon.

Problem: Don't know why but I didn't write down the seedphrase to the MetaMask account. BUT, I did write down the private key which I assume is the ETH private key.

Goal: get access back to the MetaMask account so I can move these NFTs from the hot wallet and bring them to my main account.

I wrote down a private key so I'm hopeful that with the private key I'm somehow able to access the account even if I don't have the MetaMask seedphrase. Any assistance on this would be greatly appreciated as I'd like to regain access to my NFTs. Thank you.