Are you German? Then this guide would probably be the best way to start. If not, I cannot really recommend a good guide. But you’ll essentially need a Usenet provider (like eweka.nl) to access the Usenet and an indexer (like SceneNZBs) to find stuff. These two can be combined with e.g. SABnzbd as a downloader and the *arr software suite to automate the discovery and downloading of media.
A little bit of (hopefully) constructive input if you didn’t already know:
Suno respects the format of your lyrics. You can structure them into semantic verses and even prefix them with instructive “tags”. Doing a quick search, I found no real documentation, but I think this article gives a bit of insight.
You could try making a bit more structured song out of it, if you wanna. It might sound even better when suno knows where to add pauses and stuff. I’m really impressed by what that thing can do with just a few lines of text.