You need to upgrade everything but it's good to go phase by phase . Probably waiting for mid-end Zen 4 when it's out , the Ryzen 5 6600 for example would be an insane upgrade while being future-proof . It should still pair well with the RX570 for a while until you can find a proper upgrade , probably RDNA3 version of 6700xt .
For quick and cheap upgrade you can do now is probably an SSD Upgrade for your main OS and games if you didnt have it already .