My understanding is that to be able to mine a meaningful amount of crypto, you need to set up a farm, buy hundreds of graphics cards, buy electricity cheaply, etc, but that it's got infinitely harder in the last few years. This isn't my field, so do your own research.
Mining crypto (BTC) is now more expensive per coin than the value per coin. Why not invest in BTC instead? With a fixed supply of 21 million coins, Bitcoin provides a reliable store of value, positioning it as a compelling option for retirement investors seeking a hedge against monetary debasement. 2025 is highly likley to prove BTC as a great asset in a bull market.