All true.
Lesson #2 for us newbie: If we play with thinly traded options, learn to have patience and don't buy/write unless we can get near mid of bid/ask.
I found I had a better chance of making money if I could get mid of bid/ask in thinly traded options. Even though win was < 40%, convexity resulted in net positive outcome for the past 7 years.
Is it skill? Nah, all could be attributed to the bull market. I could essentially achieved the same result trading the underlying using margin!

But playing with options is more fun, makes me feel like a pro when I tell my friends I am an option trader.
Best regards,