There have been many posts explaining why crypto is better than normal money in this thread. Here's a quick synopsis anyway:
1. Crypto does not rely on a centralised banking system that controls the supply by being the only ones able to print or burn more tokens/money. Overprinting by central banks is what caused this inflationary crisis we see today, that will develop in a huge liquidity crisis soon. This is proven by the money supply of the last few years reported by the FED in the US, and the ECB in the EU to name a few, as well as their balance sheet that is increasing exponentially with each year (asset holdings by central banks that prop up the prices such as houses or equities). This basically means that your labor in order to earn a wage amounts to nothing, because banks can do what they want to print more. Each crypto has its own tools to deal with inflation and deflation, mainly by printing if there is a need for inflation or burning tokens as a means of deflation, usually done by voting or delegator/stake pools (works kinda like a senate).
2. The transfer fees are extremely minimal depending on each crypto's network. Some are more expensive to use than others, some are practically free.
3. Transfers are lightning fast, again depending on each crypto's network. Some take minutes, others less than a second, no matter the distance.
4. You don't have to go through hundreds of loops of bureaucracy if you wanna transfer funds from one part of the world to the other. No more waiting around for weeks until a transaction is finally authorised by the many banks that touch your money as it moves through them and they take a percentage.
5. Energy requirements are vastly less on most proof of stake cryptos compared to banking. This makes crypto as a store of value better for the environment by default should proof of stake become the dominant from of token governance. Proof of work costs more energy, but it is theoretically more secure because the computations are heavier.
6. Transparency. You can't hide your illegal shit from the blockchain, so there is no money laundering or shady stuff going on. If you have a person's adress, you can see their movements. Of course this can be set up in a way that it is only viewable by the police.
7. Security. Crypto held in personal storages are only possible to steal if you can crack a 32 word password or something similar. The only other way to hack a network is to control over half of the supply, which in most cases takes dozens of billions of dollars. Even if that were to happen, the good cryptos have mechanisms in place to prevent that.
Of course some cryptos are better than others, and there are many that specialise in different things such as smart contracts which improve automation in the financial sector through oracles, others are focused on network speed, and others focus on decentralised finance etc.