

I don’t think your opinions are that unusual. The first 4 Alien films are all unique in their own way, and if you watch the Assembly Cut then even 3 is a fairly consistent and satisfying experience. It’s really from Prometheus onwards that the major issues started, although I will say that at least Prometheus was still trying to bring something different in its themes and setting (which were unfortunately poorly developed and hampered by the terrible writing). Covenant was just a complete mess suffering from a clear identity crisis and Romulus was soulless nostalgia-bait, as most reboots are.
Did you watch the Assembly Cut of 3? It’s a more consistent and well-rounded experience, although the film still goes downhill considerably from the moment of
spoiler
Charles Dance’s death. He played by far the most interesting character and the only one with any real development (other than Ripley). As soon as he exits, you’re left with a bunch of nobody criminals who until that point have existed mostly as plot devices.