Last time I played, because i already beat it in Deity once or twice and that suffices for me (waiting for 7), I played as Rome to see what benefits could be made out of trading posts (just because there was a thread around here that asked that if England started with a trading post in its first city on each continent, would it be overpowered, I said no). Game difficulty didn't matter, so I let it in Prince. Well, I learned that trading posts would "refuel" your traders, so you can reach further. I settled a city midway from my capital and a city-State, and built a trader right after. Send it to the CS, and got only one gold more than usual (4 instead of 3). When completed, I assume the trader created a trading post in the CS, so the gold went from 4 to 5. Wao, amazing. And that would be it ! As to play the rest of the game, I quickly got bored because everything was so dull for some reason(s), I just quitted with the usual disappointment.
Now let's analysis this a little bit better. I should have quitted after seeing the misarable effects of trading posts. But I somehow was "engaged" in turn clicking. The early game can be interesting. But after I discovered my neighbours were too far away, and having disabled barbarians (that can be a pain, let's keep being honest), and not being a great fan of districts construction nor even city placing (especially in this version), nothing really engaging happened here. I got a religion but... nothing happened.
The main interest of this game is to make YouTube videos to show people how insane you can go with some civilizations uniques. And the success of it, is because social networks are in fashion and are viral. Civ6 success relies nearly exclusively on the virality of social networks. It's a great business model, but for normal people who are not constently browsing ununderstandable content makers like PotatoeMcWiskey (omg, this one speaks too fast, come on I'm just a french guy), and make normal games with their sticks & dicks (fun word for kids, moderators

), it all flattens pretty quickly. In one hand, it's not interesting to play in lower difficulty levels. (except for total noobs, but that's fair

) And in higher ones, it can be discouraging to be so backwarded. Only fools can sanely continue a game where at say turn 80 (normal speed, 500 turns) the most advanced AI has 20 techs more than you. (if you survived any early rush, I don't have anything against early rushes, but sometimes, it's just impossible to survive you know, due to AI
BONUS units, which make it silly)
There's probably more to say about it, especially in the multiplayer department, but here it is anyway.