OK, I saw this movie and I liked it. But I don’t think I “got it”. Was there supposed to be some kind of message? Is there some symbolism that I’m missing? And I only counted 2 burials-- was the first one supposed to be when he was just dumped in the desert after he was shot?
I guess some more specific questions on your end would help, but yeah, the first deposit of his body counts as #1. As for the “message”, I think it’s very much in the vein of Peckinpah’s films like Bring Me the Head of Alfredo Garcia, in that a thankless, arduous task represents the road to, if not redemption, at least a reorientation on how you see the world. Ultimately, TLJ is a man of honor who is less interested in revenge than in staying loyal to his friend and keeping his word. The fact that his friend had a life much different than what he claimed only cements the romantic notion of how the West (even a dying one, like in the film) can symbolize freedom, renewal, and hope–whereas to others, like the border patrol agent and his wife, they only see a vast emptiness that reflects back on the shallowness of their own lives. Not really too heavy on plot, it’s more of a meditative mood piece, with the assorted characters they meet adding color and resonance more than “meaning”.
That’s pretty much how I saw it, except I explained it to someone as: A bunch of fucked-up people in South Texas. 
Of course, there did seem to be the obligatory white guys = bad (except the hero/writer/director) and brown guys = good/victims that comes with artsy films of this sort. But whenever I see someone undertake a journey of this sort, I expect to see some kind of “redemption” or something, but it just kind of fizzled. Perhaps it would’ve helped if we knew more about TLJ’s earlier life or if they fleshed out the friendship he had with Mel better.
Like I said, I enjoyed watching it, but at the end was left with: Is that it?