All That (1994-2005 Nickelodeon sketch comedy series)

I’ve been trying to find All That for years, specifically seasons 6-10. Many of the episodes used to be on YouTube but are no longer there. I have searched extensively for the episodes elsewhere online but have found none of them. From what I have found, seasons 1-5 are available online with the musical performances intact (except for season 2). Since 2011, seasons 2-5 have been aired on Teennick with the musical performances edited out, and circa 2008, seasons 3-7 were aired on The N with the musical performances kept in. Otherwise, many of the episodes haven’t been aired since the original broadcast. The wiki says that many of the episodes are available, but from what I’ve seen, they aren’t. If anyone could help me find these lost episodes, please let me know. Thanks!