I've never used Kodi, and have no idea what Exodus is. But as far as I know, AMC shows like Walking Dead and Saul aren't generally going to be available for free (legally). The main ways I know to watch them without cable are via Playstation Vue or Sling, or to just buy the seasons on Amazon (or Google). Not legal, but you can also watch them on AMC's website provided you have a current cable subscribers login information.
I lean towards buying a lot of shows. It's extremely convenient (I can watch them anytime and anywhere that I can pull up my Amazon Instant Video account). More importantly, I like good content, and as cordcutters, we can't have our cake and eat it too. These people can't keep making these massively expensive shows to be consumed by people unwilling to pay for them. I generally only watch things I like, and think it's important to pay the people that make good content. In the end, it still works out much cheaper than paying a monthly cable subscription. A season pass of Walking Dead is relatively expensive ($42 in HD, $26 in SD), but still that's about half a month's worth of cable for 16 or so hour long episodes. Also about the same price as one night at a movie theater watching another crappy superhero movie.
I'm assuming Exodus is a way to watch content for free (please correct if wrong, as I have no idea). I'm not sure how those streams compare to Sling/Vue or Amazon, but shows stream beautifully on Amazon and generally pretty well on Sling for me. My hunch is that, if the stream quality is different (or you have to search around for good streams on Exodus), this is probably one of those situations in life where you get what you pay for.