I'm curious what game modes you might be using..? I've played a couple of
Dramatic Ages games lately, and they're much easier because the AI can't deal. The AI generally gets alternating Golden and Dark Ages: Golden Classical, Dark Medieval, Golden Renaissance, etc. If you're able to get a Golden Medieval Era, and get on the opposite schedule - when you have a Golden Age, they have a Dark Age - you can simply wtfpn the AI with Loyalty Pressure and by capturing cities in revolt, which generates no Grievances (that's basically an exploit, and they need to fix it soon - I don't know if the AI even recognize their former cities as having once belonged to them). I play on Emperor, btw, with big maps and longer game speeds.
I also recommend looking into
mods that might tweak the game around the edges. Sometimes a little thing can make a big difference. A lot of mods are purely aesthetic, but I use some that impact gameplay (links to Steam Workshop pages):
1.
Free Walls for City States can slow down aggressive Civs, particularly in the early game.
2. I use
Extended Eras for the increased verisimilitude (thanks to
@pokiehl for the tip), but it also helps keep the AI from running away in technology and increases the effective 'shelf-life' of my military units (and because I'm better at waging wars than the AI, particularly in keeping my units alive and earning promotions, this greatly benefits me over the AI in the long run).
I think those are the two I use that have the biggest impact on gameplay, but some of the UI mods can also be a big help, even if they don't change anything in the game:
Community Quick User Interface;
Global Relations Panel. There are lots. You'd have to find the ones that help you shore up your weaknesses. Like, for me, anything that helps me win wars against the AI isn't all that helpful, but
Policy Change Reminder is a friggin' Godsend.
Finally, go ahead and
regenerate the game/map if it looks like a poor start or it just isn't what you're looking for. Sometimes I get a good game purely at random.
