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I'm not great at understanding a lot of the technical aspects of the different pc parts, and especially figuring out where any potential bottle necks are. I'm thinking that the gpu is my biggest issue right now, but I'd hate to spend the money and not get a huge improvement in performance.
p.s. I'm leaning towards the RX 6600 for a budget friendly upgrade, but I'd be open to other similarly priced suggestions.
Update: thanks for all of the advice y'all. I ended up spending a bit more for a 6650xt.
I think upgrading to a 6600 would be a good choice. That will net you a sizable jump in performance for the price. According to TechPowerUp, the 6600 is about 70% better than the 1060 6GB. If you were to upgrade anything else, I would say the power supply. Paired with the 8700 and 6600, yours will be perfectly fine. But if you were to upgrade to, say, a 3080 or above, then a beefier supply would be required.
Edit: The 6600 only runs on 8 PCIe lanes instead of the regular 16. This isn't an issue with newer hardware, but since your CPU doesn't support PCIe Gen 4 speeds (only Gen 3), you may experience lower performance. Idk if it will be significant. Mostly because 8 PCIe Gen 3 lanes should be enough to not bottleneck the 6600. I believe Hardware Unboxed, Gamer's Nexus, or another channel tested that, but I'm on mobile and don't feel like searching for it.
AFAIK the pcie bandwidth difference from using gen 3 isn’t particularly noticeable. I’ve recently upgraded to a 6600 that I got for cheap and I would say it’s a pretty good card. The only problem is that performance varies a lot. Some games play well with it while others do not.