Need help to prioritize my upgrades

I've recently bought a 1440p 200hz monitor and while my current build doesn't have any issues with the most optimized titles (Elden Ring somehow runs better now than it did at 1080p) it's not enough for any demanding title.

My current specs are

-Rx 6600 GPU

-Ryzen 5 5600g CPU

-16GB of Ram ddr4 3200mhz

-500w Power Supply

-B550 motherboard

Pretty much all of it but the motherboard needs a lil extra and I don't exactly have the money to do it all at once, and with the market being so crazy these days I'm trying to look for what would immediately make a difference.

I don't exactly have a lot of money at hand and the prices here in Argentina are crazy. So I could either upgrade the CPU (been thinking on just swapping it for a R5 5600 and get the money back selling the 5600g) and adding 16gb of ram, or save that money and prioritize my savings for a GPU, which the most affordable option would be the Rx 9060xt

I know ideally for 1440p I'd need a 5070 but we're talking about double the price (550 USD of the 9060xt to the 1000 of the 5070) and at that point I'd need a new power supply and likely a new case so it's all extras that aren't particularly cheap either.

I know I picked the worst time for upgrading (particularly the ram) but anyhow, any help is welcomed