So I cant win on monarch
help/advice is welcome

monarch/continents/normal speed/ no huts/no events
Starting location
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Took the first map you posted for a spin. Played on emperor.
CS slingshot with Oracle as part of my samurai rush strat. First I cottaged my cap and rapidly expanded; Osaka got to build Oracle because it actually had production while Kyoto worked on a library for science and to get GS academy ASAP. I attacked and vassaled Darius and Mehmed after beating them to a pulp; Mehmed actually DOWed me first but his pathetic stack of 10 units easily died to my Kyoto samurai garrison and a catapault, as I saw it coming from a mile away (thanks red fist, courtesy of BUG mod). Then turtled and mutually teched with my vassals until I could get cannons with liberalism at about 1200 AD. Egypt capitulated quickly. In the meantime I build galleons to take on the other continent, and also continued spamming rifles and cannons.
What followed was a pretty intense fight. Sitting Bull was kinda running away (not really, but he was the only one besides me with rifling, so I knew I had to kill him quick). Had a standoff at his border cities where he piled like 20 rifles and knights onto me (thank god he was still like 20 turns from cavalry), but none of my defenders died because I parked myself on a forested tile, and also my diversionary stack had a nice time trashing one of his core cities that he left relatively undefended. With a supermedic and sacrificing some cannons, I killed some 20 defenders every other turn. Soon the city was mine. I ceasefired for about 5 turns to upgrade to artillery and (some) infantry, and then continued pushing on. His cities fell at an increasing rate as I gradually upgraded my doomstack to a horde of infantry, but it took me capping 2/3 of his empire for surrender.
After that, Zara fell in literally two turns, and Hammurabi capitulated too, but not before I had some fun with attack transports and tanks. Final result: turn 283 conquest victory. Overall, it was a pretty fun game, would play again - agg and pro was surprisingly good as all my gunpowder units could multitask and city garrison 3 drill 2 infantry can eat up cavalry for breakfast all day.