Show was great in Season 1 and you would be fine if you just stopped watching there. Season 1 was something totally different, with great humor.
Seasons 2 and 3, however, are basically just The Karate Kid 5 and 6, or whatever number those movies would be up to now. I signed up to watch Cobra Kai seasons 2 and 3, not The Karate Kid 5 and 6.