I do kettlebell swings when I want a no-impact cardio move that also requires strength & explosiveness from the core & hips (because I lack that).
I typically include them as part of a cardio/strength circuit workout.
And I’m not claiming to be a kettlebell guru but I do know it’s a movement that comes from power generated at the hips with the KB swinging directly under your booty.
Too often I see people doing this bent over forward, chest falling & the KB swinging too low.
I do ~30 reps several times in my Circuit with a 35lb kettlebell.
Newbies: start with a LIGHTER weight KB to master your form first.