My brother bought season one on DVD and we have one episode left. I've been trying to find season 2 and 3 online. I found a few episodes on dailymotion but they didn't have many. If anyone knows where to find them I'd appreciate it.

For some reason it's on the CW Network's streaming site (which is free), even though Suburgatory aired on ABC:

https://www.cwseed.com/shows/suburgatory/

Thank you. This will make my brother happy. He has been trying to find the rest of the show for a long time.

You're welcome. Although I peeked at the finale of season 2 again, and it wasn't as epic as I remembered. They must've edited out parts of the episode for some reason.