I'm programming on python, I tried Unity but i can't create a perfect saving system.

I'm currently creating a Bitcoin Mining Simulator and I can't decide if it's going to be PC Tycoon or Bitcoin Mining Simulator. And I'm 13 years old.

There is link to prototype version of Bitcoin Mining Simulator: https://gamertronky.itch.io/bitcoin-mining-simulator

Prototype: 100% Pure made in python without any game engines like pygame.