I am planning on upgrading my PC, specs: NVIDIA MSI 1650 4gb, Ryzen 5 3400g. Motherboard Asus TUF x570-Plus Wifi, 16gb ddr4 hyperx single stick RAM. 256 ssd and 1tb hdd. The reason why I am planning on upgrading it is because the pc is acting weird, for example, when playing league of legends, I can’t have anything else that isn’t discord and iTunes open and I have to run it to the lowest graphics possible or the fps drops in team fights are horrendous or sometimes even without much happening. I was thinking that maybe the processor is causing the problem. A friend of mine suggested me the ryzen 5 5600x but idk if the processor is the way to go or the graphics card. Also I am thinking of adding an extra 8gb or 16gb RAM.
Could someone help me on guiding me what to do and how to fix it? Thank you.