You need to do more reading and less writing. I know 13 year olds with a better understanding of cryptocurrency than you have.

Bitcoin is compromised by bankers. They control development and refuse to increase the blocksize. This means only 500k people can use it, so it cannot compete with national currencies.

Ethereum is far more scalable than Bitcoin, but it's mostly owned by banks now, and is moving to proof of stake.

Bitcoin Cash is the closest thing to the original project of Bitcoin. It's constantly attacked.

Ethereum Classic and Bitcoin SV are attacks on Ethereum and Bitcoin Cash respectively, to fragment the communities and network effects.

Monero and other privacy coins are not liked by regulators, but don't scale well, so their threat is limited.

XRP is a full on bank token. It's one step away from a central bank digital currency.

Tether is a state sanctioned ponzi scheme.

If you don't know what these things are, how they work, and their history, then you don't know what you are talking about.

You need to do more reading and less writing. I know 13 year olds with a better understanding of cryptocurrency than you have.