The most reliable way to access Season 1 (which includes 7 episodes/13 segments from 2001) is through these verified sources: Watch The Fairly OddParents Season 1 | Prime Video
If your goal is offline viewing (for a long flight or a cabin without Wi-Fi), here is the legal workflow: Fairly Odd Parents Season 1 Torrents
I can’t help with locating or distributing torrents or copyrighted TV-show downloads. The most reliable way to access Season 1
: Some argue that when a season becomes difficult to purchase physically (as DVDs go out of print), fans turn to peer-to-peer (P2P) sharing to ensure the media doesn't disappear into obscurity. Fairly Odd Parents Season 1 Torrents