Interesting, but I'll give you some opinions and if you want, you can implement them in your code to get better and better:
Do you know the
BIP39 iancolaman website? It's a website that generates a mnemonic, seed, xprivs, derived keys, addresses, etc. It would be great to have a tool like this without needing to be on the website. It's possible to create this all in a script and run it on your machine.
It'd also be interesting for the script to generate all types of existing bitcoin addresses:
legacy - p2pkh
p2sh-segwit - p2wpkh-p2sh
bech32 - p2wpkh (native segwit v0)
bech32m - p2tr (taproot - native segwit v1)
Another similar interesting site for you to base yourself on, each with one more or less functionality:
https://bitcoiner.guide/seed/https://gugger.guru/cryptography-toolkit/#!/hd-wallet
I don't advise anyone to generate wallets based on scripts we find out there, especially from strangers (unless you know how to review the code), as a bug could happen that could make you lose your funds.
But as long as you only use it for learning and testing, it's fine.
There are several similar scripts that we can find here on the forum and on this board.