The first season or two are rough. The Kazon stuff is just... Blah, imo. After that it picks up. The character development, I think, is the best part. Mostly the Doctor, if I'm being honest. Later when Seven joins, her character arc is great, too, and while she was definitely supposed to be sex appeal, her actress, Jeri Ryan, crushes it as a character and not just a sex symbol.
I'm guessing the whole Neelix thing is throwing you? He's definitely incredibly grating, but he'll weirdly grow on you as the show progresses.
In my opinion, it's definitely the weakest of the three you mention, but it still has its merits. Even after we leave the Kazon stuff behind, you'll get a one off episode here or there that just falls flat.
I'd suggest trying to power through a bit longer to see if you can pick up anything you start enjoying. And if not, there's no shame in not finishing. Not every series hits for everyone and that's okay.