If you want to experiment for learning:

: Legitimate tools have an extended history of contributions, multiple active developers, and transparent commit logs. Avoid repositories created recently with only one or two commits containing compiled binary files (like .exe or .dmg ).

Private keys generate public keys through the Elliptical Curve Digital Signature Algorithm (ECDSA) . This one-way cryptographic function makes it impossible to derive the private key from a public address. The "GitHub Repack" Phenomenon: Why It’s Dangerous

The term "repack" in this context generally refers to a third-party redistribution of an open-source project, often bundled with additional tools, configuration scripts, or a graphical user interface. This can be for legitimate reasons, like providing a more user-friendly package, but it can also pose security risks.

If you have lost access to your Bitcoin:

Yes, but they do not involve "finding random rich wallets."

That is 78 digits long. By comparison, the number of atoms in the observable universe is about (10^80) (an 81-digit number). The keyspace is incomprehensibly vast.

: Some scripts scan specific keyspace ranges to check for historical activity or remaining balances.