This show is a smart, deep dive into the anxiety of a man, and it's honestly the best way I've seen anxiety depicted in a TV show, but it's unfortunately betrayed by two things. First is its format: a weekly show which starts out absolutely depressing? You'd think "would want to watch this?" I personally found it hard to continue after the first three episodes. Second is its marketing: I've seen trailers that imply the show is a feel-good comedy, when that's the furthest thing from the truth. No wonder so many people dropped it within the first half, unfortunately causing them to miss Josh's ultimate development in the second half. This show would've had some real potential if it weren't for those two points, and it's understandable why it was canceled.
Expect this to be a satisfying slow burn (very much in the vein of anything out of A24), and it's certainly best watched all at once rather than spaced out, treating it as one long film or two, getting you past the utterly depressing parts in the first few episodes. The latter episodes are where the show really shines, including what could possibly be the best depiction of the 2020 lockdowns I've seen in recent media, and a finale that literally goes out with a bang. The performances of Levitt, Castro, and the rest of the ensemble are stunning. Frankly, it's not for everyone (and I don't think it was ever meant to appeal to everyone; what was Apple TV+ thinking?), but if any of the above appeals to you, it's definitely worth watching.