Great tips. Simply put, buying a new gaming desktop can be more cost-effective than upgrading an existing one, especially if you don't know how to install new components. When shopping for a new gaming desktop, look for a high clocked processor and a dedicated graphics card with at least 4GB of VRAM. Some popular processor options include the Intel Core i5 or i7 and AMD Ryzen 5 or 7, while popular graphics card options include the NVIDIA GeForce GTX or RTX series and the AMD Radeon RX series. This is enough for playing at medium settings.
And in order to upgrade your PC on your own, you need to read guides and watch a few videos on YouTube, and understand if it suits you at all.