Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ

Hi, I'd like to set the sails due to being frustrated with streaming services, but I have some questions beforehand. I hope, you can help me with that, since lurking and reading the Megathread/Wiki didn't really answer my questions. Thanks for your help.

1. Is just using a fitting VPN (I've read about Mullvad and ProtonVPN in this community) safe enough to not get caught? I'm located in germany, so sharing even as much as a few kB of pirated content can cost me thousands of euros. I want to be really sure, that I won't get letters from some lawyer soon. All, that I've read so far is basically: Setup VPN and your Torrent software, including kill switch and maybe get into private trackers. Thats it. Is this really enough? Can I do more to be safe? What exactly is the risk with public trackers (as they are often mentioned as the "low hanging fruit" for copyright lawyers)?

2. I've read the post The complete guide to building your personal self hosted server for streaming and ad-blocking, which mentions many tools to setup. I'm sure these help me find and view content. But are there good resources explaining the functionalities of this software? I'm familiar with Docker and I know about Jellyfin, but it is really unclear to me, what exactly all the other tools do.

Big thanks from a long time lurker!