Series Someone's reading a Lois & Clark review?
You need to get out more often.
Anyway, Lois & Clark is mostly forgotten, even among DC aficionados. The popularity among soccer moms was doubled-edged, as my generation (eighties-nineties) were turned off by the sappy romance, while anyone younger who tried to watch it was - metaphorically - at sea. When it was released on DVD, it was to promote Superman Returns. This caused a brief spike in interest, as fans realized the show wasn't completely indifferent to canon and was trying to be good. (A similar thing happened with Smallville, which was excepted to be Dawson's Creek with capes.) And for the most part Lois & Clark is good. The bad guys are contrived, of course, but the Daily Planet family is well-written and likeable.
The first two seasons are recommended viewing. It's standard stuff, with enough twists and Nineties cheese to keep it interesting. Everyone agrees the latter two season are total drivel. The writers spent an astounding amount of energy keeping the couple from marrying and... yep, that sure bit them in the asshole, didn't it. And, in hindsight, who the hell cares? There are a few highlights, like the New Kryptonians coming to Earth to make Superman their king, but the show was burnt out by that point. Season Four is full of a lot of stunt casting no one cares about.
As noted elsewhere, Clark and Lois have the kind of chemistry Howie Long and Thatcher had in those old Radio Shack ads (which were probably inspired by this show). They're not Gable and Lombard, but they're easy on the eyes and make a lively buddy team. Clark isn't bumbling like in most incarnations, he's just sheltered and naive. Lois Lane was born jaded. There's a good scene in the pilot episode where a cop wisecracks about a man killing himself with an electric bath; Clark gets in his face, and shames the officer through sheer force of his words. That's the kind of stuff I dig about Superman. At his best, he's not preachy.
Series Doesn't take full advantage of the rich world of those characters.
In retrospect, it suffers from the same problem almost all superhero live action TV shows had in the 20th-century. It has the main hero, it has his supporting cast, but it lacks most of the hero's supervillains, instead pitting the hero mostly against a variety of forgettable opponent-of-the-week that are original to the show.
In this sense, this show isn't that different from 1970s efforts like Lynda Carter's Wonder Woman, or the Incredible Hulk. They're all superhero shows that, for whatever reason, don't take full advantage of the rich world of those characters.
Complain all you want about Smallville or the Arrowverse shows, but at least they bring in plenty of supervillains (and even other superheroes) instead of being stuck with just one canon superheroic protagonist in a world full of non-canon menaces.
Still, at the time, such shows were all we had. And the main actors had charisma and chemistry.