I personally like Star Trek better because it’s the OG and has better world building.
I must be a weirdo because I actually preferred the Orville more in the first season when the focus was a bit more on the comedy, as that brought something new and hilarious to the table. In the later seasons, they shifted to what feels extremely similar to TNG, which made it less interesting for me, although I do still enjoy the story. The similarity isn’t just in the style or themes of the show, either… I remember seeing multiple episodes of the Orville with plot lines that directly correlated to specific TNG episodes.
The most important thing, though, is that we get more Sci-Fi on TV. The more the merrier!