Step 1. Get a VPN. Probably a paid one that aligns with the needs of the client. Step 2. Get an app for p2p/torrent downloads to make things fast. Step 3. Configure your app of choice to strictly use the tun0 (VPN) only and nothing else. Just in case you get a lapse. Step 4. Do it like it’s 2008 again baby!
I’ve been using ParrotOS as a daily driver and it’s been good to me. I don’t need much though. Based on privacy and security and for that field of work. They have a pen test version and a home DD version.