Is there a way to enhance performance on my prebuilt PC?

I’d highly recommend skipping the 8400F altogether. If you can get your hands on a 7500F or even better, a 9600X, you’ll see much better performance. The 8400F has some drawbacks similar to an APU, such as limited L3 cache and PCIe bandwidth, which isn’t ideal for gaming.

Honestly, the 8400F is quite a bottleneck compared to the newer Zen 4 architecture. It's slower than the 7400F or 7500F. You really should look at upgrading the RAM to a 2x16GB DDR5 kit instead—this can significantly improve performance. Also, your motherboard doesn’t have VRM heatsinks, which could limit future upgrades. Regarding the PSU, an 800 watt unit is excessive for this system; a good quality, lower wattage unit would work just fine. And that Cooler Master Z50 isn’t great—consider a 120mm tower cooler for better cooling efficiency.

You could look at swapping the 8400F for either a 7500F or 7600, as they would provide a noticeable performance boost without breaking the bank. Just be aware that the 8400F isn't the best CPU choice if you're looking for longevity and performance.

The Ryzen 8400F is one of the more budget-friendly AM5 CPUs, but it isn’t the fastest out there. You could consider upgrading to a 7500F or 7600, but that would require downgrading your power supply to around 500-600W and potentially switching to a cheaper case or using the stock CPU cooler. If you're up for DIY, building your PC could also help put more money towards better components.

The Ryzen 8000 series isn't the best option available if you're on a budget. The 7500F gives a bit better performance, while the 7600 or 7600X are more like the baseline for decent builds these days, so you might think about those options.