my subscription has "expired" but the cheat has been down for over 3 weeks that I had this cheat, do I have to re-buy it or will it get renewed upon cheat online state
If you wanted to switch to intel you would need a new MB and CPU,
However the fact you want to stay with Ryzen. Both Ryzen 5 and 7 operate on Socket AM4 platform. So no you would just need a new CPU.
(why would you stay with AMD though)