How many versions of Trek have you watched and which were your favorites? I'm half way through next gen and am deciding on what series to watch next as well as which to avoid if any.
Watch DS9 after you finish TNG for sure. It’s my favorite of all of them, and it was made to go hand-in-hand with TNG as far as chronology goes (they’re both set in the 2360s-2370s, as is Voyager as well).
As for avoiding certain series, I can’t really say. Voyager and Enterprise get pretty mixed reviews, but a lot of it depends on personal taste alone. Also Voyager tends to get its share of special fandom-brand misogyny over Captain Janeway, so watch out for people who just needlessly/baselessly hate on it without ever displaying nuanced arguments or criticism that’s actually well-deserved.
I’d say to sample some of the “better” standalone episodes from each show to see if you like the characters/premise/writing/etc. before deciding to commit to watching the entire series. Voyager has 7 seasons and Enterprise has 4, so that’s a lot of TV watching either way.