[SOLVED] Best upgrades for my current PC?

Sep 26, 2020
Hey, about a month ago I bought a prebuilt and upgraded the ram (8GB) too what I currently have, 16GB. This is the link too the prebuilt: here (I bought it when it was on sale for 730$ USD)

The specs for it, are:

System Model: Legion T5 28IMB05
CPU: Intel Core i5-10400
GPU: NVIDIA Geforce GTX 1660 Super
Memory: 16gb (upgraded)
PSU: 400 wattz
Storage: 1tb HDD + 256gb SSD
Motherboard: CML B460 MATX MB

What are the best upgrades for some better FPS? Not trying to spend over 400-500$ USD.