If you loved Alien: Covenant, try Prometheus
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Ridley Scott, and they both carry the dread mood tag, and they sit in Horror / Science Fiction territory. If that's the register that drew you to Alien: Covenant, the second film will land in a comparable space — through a different lens.
dread
What Prometheus is
LV-223. A distant future. Murmurs in the dark. A deep-space vessel lands on a desolate moon, its crew seeking the creators of humankind. Ancient ruins yield more riddles than answers. Scott returns to the well of cosmic terror.

