Watches all his comrades die trying to save the world, survives to defeat the apocalyptical dragon, only to die in the aftermath - gets sent back to the time before the apocalypse and decides to save his friends.
MC goes back to before a zombie apocalypse. Starts prepping. Doesn't really seem to have goal beyond survival (maybe save one friend). MC is super cold and ruthless which makes it a fun read.
Basically a mix of 'Returner's Magic Should be Special' and 'The Beginning After the End'. Decent all around but story is just getting started. MC is trying to save everyone he loves so little higher stakes than most reincarnated plots.
A Returner's Magic Should Be Special