Welcome @Noopacity! Have you considered your own comfort levels with respect to the games you’re choosing to put on the table? Further to @pillbox’s comment about simple games still presenting a hurdle to new or non-gamers, I think it’s always worth thinking about your own comfort levels first.
While you obviously have the advantage of being eager and willing to learn and play, consider the burden you place on yourself as host: now you must teach, while maintaining attention and hopefully sparking interest, and making sure you aren’t getting things wrong. You will probably have never played yourself, so your “expert” knowledge isn’t likely to be much more than a manual read and a video watch, so questions from players or edge cases that arise might stall the game.
You might be a perfectionist, and it’s a common trait—analysis paralysis is a well defined term in the hobby—but there’s an awful lot going on in a learning game and I wouldn’t necessarily worry too much about those lockups yet. As “host”, my best immediate advice would be to try to consider the experience of the other player(s) since boredom is a killer for “next times”.
Consider playing your multiplayer games solitaire. Myself and several others around here frequently run two- or multi-handed solo games, handling individual players turns and getting a good handle on the mechanics. This is usually to get a good understanding ahead of a teach, but some of us, myself included, do it for fun (hello @yashima 
)! This can really deepen your understanding and allow for a more natural rules explanation, plus open your eyes to gameplay options to suggest to new players on those cramp-inducing first turns.
Analysis paralysis, rules lockups, basically any kind of unwelcome delays are absolute mood killers, particularly during that critical first game. So, further to the initial point: consider your own comfort level with complexity at this time. If you’re trying to table a big crunchy game, you might be overwhelming yourself and damning any prospects for next time. And irrespective of weight, do try to play a game by yourself first. It’s frequently more fun than you might expect and it does absolute wonders for ensuring that first game goes as smoothly as possible.
Finally, a simple one: if you are trying to get people that don’t normally play back to your table, be prepared with a game you’re eager to replay for a while. Rules fatigue is real, and if you show your players a little repeat play, eventually you’ll hear that wonderful sound…
…“so what else you got?”
See my post further up!