The best three are TNG, DS9 and VOY.

TOS is very much a show from the 60s. If you love SNW, though, it's definitely worth checking out. If you can't get into it, the movies are still worth a watch. Wrath of Kahn is obligatory watching.

Be sure to watch First Contact. The other TNG movies aren't as good.

ENT has its moments. If you get bored with the Xindi or temporal cold war storylines feel free to skip a bunch of episodes. IMO it gets good in season 4 and great right before it was cancelled at the end of that season.

Lower Decks is a funny cartoon that you should watch after you've seen a lot of other Star Trek shows, so that you'll get the references.

Discovery and Picard are not as good as the earlier shows. At least, not in a way that appeals to fans of earlier Trek.

Starfleet Academy doesn't deserve as much hate as it got, but it's not great.

TAS (The Animated Series) is a curiosity that might be worth taking a look at for fans of TOS.