Luke got owned by a Tusken Raider. It gets better.
(But maybe that reference is too dated.)
Some things go out of date.
Star Wars references are not one of them!
I recently finished LMoP for a party of non-gamer friends, including my wife who changed her long disdain for the game in light of her friends playing. I found about what you'd expect. Everyone really liked it. One player can't remember what dice are what, and prefaced all of his turns by asking, "Do I roll the twenty for stealth?" The Critical Role devotee hit the ground running, and quickly worked out that Spiritual Weapon was worth casting. The Wizard player (my wife) struggled to choose between spells at first, but quickly started defaulting to Magic Missile or Burning Hands when asked, and took great pleasure in Shield once it was explained to her. The fighter outlived everyone, and proclaimed her superiority by reference to her hit points, but mysteriously didn't roll a single 19 all campaign.
Once you have the difficult explanation part ("You get an action, and also a
bonus action, but not always...") people drop into it pretty easily. I've never watched Critical Role, but it clearly has been a major boon for the hobby; once people have watched it, they very quickly start picking up weird concepts like "armor class", "saving throws", and "bards".
On topic, I'd say that your player not liking level 1 is fairly common. No player that I speak to wants to start at level 1; they all request level 3 at least. It's just too hard to bring a concept to the table when half the time you're not even in a subclass yet: "I'm a magical knight" doesn't work when you can't cast magic yet...