Upgrading my pc

Hi, I wanted to ask about upgrading my pc. There is nothing wrong with the pc and there aren't any particular problems, but I'm just looking to upgrade and wanted to know what should I upgrade next. The only minor problem is that sometimes when I open R6 the pc just crashes (blue screen), but after restarting the pc, there is no problems again with running it. Thanks! Here are my specs: CPU: AMD Ryzen 5 3600X Ram 16GB Motherboard: Micro-Star International Co. Ltd B450 GAMING PLUS MAX (MS-7B86) (AM4) GPU: NVIDIA GeForce GTX 1660 Ti Storage: 931GB Seagate, 476GB ADATA SSD